IBM thinkpad 600E not turning on

Ibm Thinkpad 600e
August 27, 2010 at 12:46:32
Specs: Windows XP
Hi, I have a IBM think pad 600e that i got at a garage sale for 5 bucks so i took it home thinking it would only need minor repairs and i found out i was wrong iv opened up the whole computer replaced CMOS battery cleaned cpu and heatsink now i have no idea what to do next the symptoms of the computer are
* when i slide power switch all the light near the LCD flash
* when i slide power switch i also can hear the cpu heat sink fan spin
any thought and help are appreaciated thank you

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August 27, 2010 at 13:39:38
Do you hear any beeps? If so, go to your search engine, and type in BIOS beep code chart, which will give you a chart of common computer problems you can diagnose simply by listening to the beep code.

If there is no beep code, then check your motherboard and your RAM. Both of these, especially the board, can cause problems as described if they have problems or if the RAM is not seated properly.

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August 27, 2010 at 14:19:09
No there is no beeps at all its completley silent other than the fan and as far as i know the ram is seated probpearly and do you know any other ways to trouble shoot this i have read a forum they got to the conclusion it was the cpu but im not so shure

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August 27, 2010 at 15:47:19
If the computer does not beep, and will not turn on, you can consider it as not working until a piece is re-seated or replaced.

For a little computer science background, the personal computer was modeled after people--the CPU is the brain of the computer. The motherboard is the base of the computer--you can think of the motherboard as the heart of the computer, as it distributes energy/power from the power adapter like how people need oxygen. Memory can then be best related to physical memory of the brain--allowing the computer to have room to do basic tasks and retrieve these tasks. Without going further into the similarities, your PC needs these three base, basic components.

If one of the three fails, the computer fails. As mentioned with the motherboard example, if the power is not being distributed throughout the PC, the PC will simply spark on and will not proceed any further. It also may get up to the BIOS splash (as in many cases) and then go brain-dead. A secondary possibility is RAM--with an error in the RAM, the computer would most likely beep or just show a black screen (though in some cases the computer has random panics, blue screens, or freezes. The last real possibility is the central processing unit--as you described--the computer is not going anywhere without a brain. :)

Therefore, theoretically, looking at it without any previous history of the computer, without you swapping an Intel(tm) chip or RAM module in it, I'd have to say that any of the three parts are most likely dead. Since you mention power going to the CPU, and the screen blanks, then I can most likely tell you it's either the RAM or the CPU in question. This, however, depends on if the computer *keeps* running for at least 30 seconds, before turning itself off.

Notes: A fourth possibility is the power supply. If the power box soldered to the motherboard is loose, that's the same as your digestive system being loose to the computer--it can't get any energy. Check that the power adapter you have is the correct voltage and that the box is intact by gently and carefully moving the cord 1-2/16" back and forth. If it feels like a loose tooth, it needs soldered. I hope, in the case it's the wrong adapter, that you used one less than or equal to the voltage it can sustain! Otherwise, the motherboard got fried.

This is basically just a summary of what I think is going on. Good luck on your computer. Don't know if all this helps. :)

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August 27, 2010 at 17:33:25
i know i have the right power supply im going to go check the ramto see if its seeyed correctly and then i will check the power plug and see if its getting correct voltage is there any way i can test the mother board or cpu
i dont think the mother board is dead because the lights flash and the fan turns on
so hope your advice helps and thanks for your help to

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August 27, 2010 at 18:54:52
Firstly, let me answer your two questions:

1) To test the memory once you do get the computer to where it can turn on, run memtest86. It is easily available on most Live CDs--if it is an older CD-ROM model, a low-density CD writable is recommended, burned at a low speed.

2) The best way you can tell if the motherboard is working is by actual experience working with the computer. :)
Please remember, because the computer turns on, does not mean that the board has an issue. :) However, if the power is getting distributed, then we can very well assume that either the CPU or the RAM needs to be looked at. My main question, however, that was never answered earlier, is whether the PC stays on with a blank screen, the BIOS (IBM) splash, or shuts off immediately after, or 30 seconds or later? This is an important question, and it will help me to determine what is the issue.

One thing that intrigued me earlier, and I quote--"...opened up the whole computer replaced CMOS battery cleaned cpu and heatsink..." If you physically pulled out the processor chip (the CPU) from the motherboard earlier, this is HIGHLY not recommended *unless* you have the training to do so. You could damage the pins on the bottom of the chip if not seated properly, or if not seated in the right direction. If one pin is destroyed, the CPU will not work. Additionally, from a bird's eye view, the pins probably will look normal upon reseat, but the CPU may not think so. If you pulled the CPU out physically earlier, I strongly recommend looking at it from a three-dimensional side angle under a desk light to see if you bent any pins. If so, carefully take a precision needle-nosed tool, and gently bring the pins back in position.

The RAM, however, can be safely re-seated and pulled out if you wish to examine it. If it is not loose and is already seated, you do not need to worry about pulling it out. Remember, before opening any computer, unplug it, follow ESD (electrostatic discharge) guidelines as stated by HP(tm) and disconnect the battery on notebook computers.

-- Andrew Greimann
MSDN(tm) Member

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August 27, 2010 at 19:04:06
maybe you should get together with this guy:

Between you you've spent 8 bucks.

Would have had better value and more fun with 4 beers.

Goin' Fishin' (Some day)

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August 27, 2010 at 19:05:36
the computer does nothing but flash lights and fan comes on but early i had a thought to plug in an external moniter as the power was flashing the light and fan little grey lines would flash acroos the external moniter like maybe one or two lines 3cm long just momentairly and i do not get a bios or anything like that on the screen
and the tiny flash of power to the lights and fan is about 3 seconds

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August 27, 2010 at 20:22:41
A dead or too weak Cmos battery, alone, will NOT cause the computer to not boot.
However, a shorted one may cause problems.

Laptop no video (or video problems), and battery, AC adapter, power jack T shooting.

See response 1:

DO NOT plug in or unplug a monitor's video cable into / from a video port while the computer is running. Doing so can damage the monitor's circuits and/or the video adapter's circuits.

Some laptops will display on an external monitor without you having to do anything.

If you get no video on an external monitor, some laptops have a key combo that you must press to toggle the display to external video only / sometimes both / built in display video only - see the Owner's or User's manual for the model.

If there is nothing wrong with your AC adapter or it's connection and the jack in the laptop.......

Laptop main batteries usually work as they should for a year or so, then they begin to rapidly deteriorate. From what I've seen, by two years they cannot be charged to anywhere near their full capacity, and it gets worse after that.
They often develop internal shorts when they are older. If the battery gets HOT rather than just warm after you have attempted to charge it for at least a half hour, or after you have been using the laptop for a while with the AC adapter plugged in, it's definitely internally shorted and you must replace it. Internally shorted batteries getting too hot have been known to cause the laptop to catch on fire.

In the case of this circa 1999 600E model, your laptop should start up with only the AC adapter connected to it, if there's nothing wrong with the AC adapter, it's cord, it's DC plug, the DC jack on the laptop, or the power circuits inside the laptop.

ThinkPad 600/600E Hardware Maintenance Manual:

Lots of info in that, including what the leds are for and what they show, and how to check the battery and the AC adapter output.

See response 2 in this - try cleaning the contacts on the ram modules, and making sure the modules are properly seated:

For a laptop, or netbook, you must remove both its main battery and AC adapter before you do that.

If someone has installed ram that isn't 100% compatible with using it in the mboard, the mboard may not boot all the way and there may be no mboard beep(s).

It is easy to test for incompatible ram that has caused your mboard to fail to boot.

Remove the AC adapter's connection, and the main battery.
Remove all the ram.
Connect at least the AC adapter's connection, or that and install the main battery .
(If you're not certain the main battery is okay, try not installing it.)
Try to boot.
If nothing else is wrong, you will get no video but you will hear a pattern of beeps that indicate no ram is installed, or a ram problem.
E.g. for an Award bios or a bios based on one, that's often a beep of about a half second, silence for a half second, a beep of about a half second, silence for a half second, continuously.

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August 28, 2010 at 17:32:32
u tryed it without ram nothing and tommorow mabye tonight ill clean the ram chips but is there any way to check compatibilitlyand is rubbing alcohol on tips gonna clean the ram or what should i do to clean the ram chips

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August 28, 2010 at 18:12:06
i got around to trying the laptop without the ram installed and nothing so then i put the screen back on and tryed again nothing same as all the other times just lights flash and fans comes breifly so then i got thinking what if i took the cou out and tryed with out the cou shure enough the same thing but as stated by agreimann my computer isnt going any where with out the cpu si i think the cou is dead because the same thing happens all the time cpu in or out

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August 28, 2010 at 19:59:35
You don't need to clean the chips on the modules - just clean the contacts. In fact, I've seen that getting isopropyl (rubbing) alcohol on some chips makes them behave erratically, for many hours.

"It is easy to test for incompatible ram that has caused your mboard to fail to boot."

If you get no beeps indicating a ram problem or no ram installed, something else is wrong with the computer.

Ram that works in another mboard , or any ram you buy or have lying around, may not work properly, or sometimes, not at all - even if it physically fits and is the right overall type (e.g. SDram, DDR, DDR2, etc.; PCxxxx, xxx mhz) for your mboard. In the worst cases of incompatibilty your mboard WILL NOT BOOT all the way with it installed, and the mboard may not even beep - the ram has to be compatible with the mboard's main chipset, or in the case of recent mboards, compatible with the memory controller built into the cpu.

See response 5 in this for some info about ram compatibilty, and some places where you can find out what will work in your mboard for sure:
Correction to that:

Once you know which module ID strings (part numbers) work in your mboard, you can get them from anywhere you like that has ram with those ID strings.

If you have brand name ram, it is usually easy to look up whether it's ID string (part number) is in a list of compatible modules found by using your mboard or brand name system model number.
If the ram is generic, that may be difficult or impossible.

You can't conclude the cpu is dead from what you've tried.
It's MUCH more likely something else is wrong, especially since you say the fan spins.
It's quite rare for CPUs to fail, unless they have gotten way too hot.

When laptops have been dropped, or have had liquid spilled on them, that often damages them such that you must replace major pieces in order to get them working again - e.g. the mboard. .
Your model is as much as eleven years old, or older. A lot could have happened to it in that time.
It's quite likely the built in display doesn't work.

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August 29, 2010 at 07:36:26
well im gonna try and order a used motherboard and cpu for the laptop today as this laptop is for my brother and mom and if you say the built in display doesnt work would the computer still boot like wouldnt the lights stay on and the fan constanly spinning and i tryed it with and external moniter the same thing happened
should i unplug the built in lcd and plug in an external

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August 29, 2010 at 08:40:28
LCD displays have a limited life - the backlight they use is a CCFL = Cold Cathode Fluorescent Lamp - eventually it burns out just like other fluorescent lamps.
If nothing else is wrong, the computer still boots, and you can get a display if you connect a monitor to the VGA port, but then, of course, it's not portable.

You can probably find working used pieces for this laptop on the web cheaply, since it's OLD, but It's really not worth spending any money or time on this computer. Even if you got it to work, it has at best a 3xx mhz cpu, which is pitiful.

You can buy much better newer used working laptops off the web, and brand new netbooks start at around $300.

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August 29, 2010 at 08:59:46
well i tryd with the external moniter and i dont want to spen 300 dollars on my brother for the 40 bucks to get a new mobo and cpu i think ill buy them cuz im buying myself an ibm thinkpad T42 possibly today

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