Computer turns on then doesn't boot up

Msi (motherboard) / 7529 v2
March 4, 2011 at 05:01:36
Specs: Windows XP, Intel 3GHZ / 2 GB
My system, (MSI 631M3 MOBO (7529 V2) / 2 GB Buffalo Ram / Nvidea video card / Hitachi 320GB HD / DVD/CDR / ATX Case with 400 watt PS / Win XP Pro) has been acting erratically the past week. It's been running perfectly the past 2 years. I press the power button, the HD whirs / all fans run, then nothing happens. This occurs intermittently and one out of 5 attempts successfully boots up and everything works fine for as long as I keep the unit on.

I reseated the RAM, cleaned all the fans, replaced CMOS Battery and entered all the BIOS info exactly as was previously set, reseated all the jumper cables. While it was running, I checked "PC Health" screen in BIOS and everything looks normal (voltage, temps, etc.) The MSI Mobo is only 2 years old.

I've researched the internet until I'm blue in the face, and would greatly appreciate any input.

See More: Computer turns on then doesnt boot up

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March 4, 2011 at 07:40:26
Post the full brand and model of the power supply.

Look at the motherboard for bad capacitors. The link below will show you what to look for.

I would suggest re-seating all cables, cards and especially RAM. In the case of the RAM, snap each stick in and out 4 or 5 times to burnish the contacts.

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March 4, 2011 at 07:55:51
check the power supply unit if all the cables are connected, the motherboard could be a big deal right here the resistors present on it might have been dead or not getting enough power

computers are a second home

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March 4, 2011 at 08:17:05
Hi OtheHill,

Checked mobo caps and they're all shiny & flat on top and firm.

PSU is Ultra Connect VS, Model ULT-VX400

Took me 8 tries to reboot PC (after posting here earlier.) Reseated RAM several times and PSU connectors to HD, etc. Crazy, but I pulled the 2nd RAM stick out and the system booted like normal! Tried to reboot again with one stick of RAM but no luck. RAM is Buffalo Select D2U533B-1G/BJ, if that helps

Thanks for the input

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Related Solutions

March 4, 2011 at 08:27:04
Then download and run a memory test utility. Best to run it from the boot. Memtest 86 is good. Get the file at the link below. No errors are acceptable.

Memory errors may be caused by bad contacts. Even if you did as I suggested the contacts can still be poor. This is primarily caused by the use of dissimilar metals for the module contacts and the board contacts. You can further clean the contacts on the module using a pencil eraser.

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March 4, 2011 at 10:28:35
burnished RAM sticks and Video card with pencil eraser, system wouldn't boot. Disconnected hard drive and system booted 2 of 4 attempts. Reconnected hard drive and system booted right up, (or else I wouldn't be able to post, lol.)

Tried attempting the Memtest86 but the information is way beyond me. I don't have a floppy drive, which only complicates matters, though I haven't needed one in 4 years or so. I do have Sonic Record Now plus and couldn't do the "Image" copy CDR.

Totally miffed here!

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March 4, 2011 at 12:19:07
You don't need a floppy drive. Get the file for a flash drive at this link. 5th file down the list.

All you need to know about the report is if there were any failures in testing any part of any of the RAM.

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March 4, 2011 at 12:33:00
Sorry all, to sound so ignorant here but I'm at my wits end. I've cut my fingers pulling out and reseating connectors. I've spent the last 2 hours backing up all my files on CDRs, just to be safe. Like Toxict51 wisely said, "My computer is like my second home," and I didn't realize how much I depend on it working.

I guess I don't understand how something can perform so well for so long and suddenly have mysterious problems I can't solve. I still have an E-Machine 533 MGHZ uniy from 1995 that boots perfectly even though it's primitive. I haven't had any surges or brownouts and in fact my system is plugged into a very expensive Tripp-Lite surge-protected power strip that's reading "Everything Normal," based on the lit LEDs.

My original MSI motherboard died two years ago on this current machine, without warning, even though it was only a little over a year old. I bought the entire kit from Tiger-Direct. Spent $235 to have the replacement and upgraded MSI mobo installed and thankfully the guy who did the repair saved all my files. As I said, the repaired unit has worked flawlessly the past two years and all of a sudden I'm facing issues that seem to baffle everyone. I emailed my repair guy and he suggested downloading a possible update to my MSI bios, which seems to be more risky than using the unit as it is, should I make an error.

I hate to feel jinxed by a machine but lately I wonder, lol. I wouldn't be typing all this if my PC wasn't operating but indeed it is, seemingly no slower than when I had double the RAM, (still using only one GB stick at this point.)

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March 4, 2011 at 12:56:02
Your frustration comes from the belief that computers are supposed to be trouble free appliances. That are not, despite what the sales folks would have you believe.

"I've cut my fingers pulling out and reseating connectors". Sounds like you have a cheap case.

"I've spent the last 2 hours backing up all my files on CDRs, just to be safe". You should have been doing that all along to be safe.

"I guess I don't understand how something can perform so well for so long and suddenly have mysterious problems I can't solve". As I commented above, when a power supply goes out it can damage other components.

Your first post indicated that when the problem occurs you have nothing on the screen. Is that correct?

I can't find much on the power supply you listed. I went to the manufacturer's website and they don't seem to have that model listed at all. Also, they do not provide specs on any of their products. That does not impress me.

If it were my computer I would try installing a brand name quality PSU (power supply). I never asked about your graphics card. What model is it. Your current power supply may not be adequate.

Who installed the latest PSU?

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March 7, 2011 at 04:38:57
Hi Ohthehill,

Thanks for your valued input.

I turned the PC totally off all weekend and this morning it booted right up.

Indeed, I have been burning back-ups of my file on a monthly basis for the past 6 years, just to be safe.

As far as the screen (ACER 24"), when the unit does no boot, the LED on the monitor shows no signal. The graphics card is a G-Force 8500 GT (PN 256-P2-N741)

The PSU simply shows Ultra X-Connect ULT VX400 -ATX Switching power supply

The Case is also Ultra and is quite large (Midi Tower?)

The company that replaced the Mobo is "Future Works" here in Knox, TN.


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March 7, 2011 at 07:19:27
To recap, your system ran OK until a power supply failure. Is that correct? Your system has been acting up since the power supply replacement. Is that correct?

I have searched for any specs on that model PSU in vain.

Post the specs off the label for all the rails?

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March 9, 2011 at 08:58:02
Hi OtheHill,

Sorry to get back so late.

My system was working perfectly until a week or so ago - no power supply failures that I know of.

I have not replaced power supply yet but did find specs (below).

After way too many attempts the system booted up this morning and is running perfectly (I'm afraid to turn it off!)

In the meantime I connected the system fan directly into the PSU, (which previously was added onto the HD molex connector cable.)

the power supply came with a ATX Mid-Tower Case - ULTRA "ULT33071", which Tiger Direct highly recommended.

These are the specs of the PSU:

Connections:1 - 20/24 Pin Motherboard Connector1
4 Pin +12V Motherboard Connectors
8 - 4 Pin Molex Connectors
2 - 4 Pin Floppy Power Connectors
1 - PCI Express Connector
2 - SATA ConnectorsOutput
AC INPUT 115V/230V 10A/6A 60/50Hz
(30A 18A 20A 0.6A 0.6A 2A)

Total Output Power:400W (Full Load, Nominal Input Voltage)Efficiency:70% Typical at Full Load and Nominal Input Voltage

Don't know if this helps but I am researching new power supplies at this point...


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March 17, 2011 at 05:38:11
Replaced PSU with 450 watt Ultra LSP450. After several attempts the computer booted and ran perfectly. Still miffed and expect I'll replace the two 1G RAM sticks next. I turn the power on and the fans blow, but the PC doesn't go into boot mode. Very frustrating...

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March 17, 2011 at 07:50:15
Did you run memtest as suggested in #4 above?

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March 24, 2011 at 04:11:37
Update - purchased 2 new 1GB sticks of RAM and installed. Unit still didn't boot until I took out secondary stick, then it boots only in one of 10 or so tries. Reset the CMOS batter jumper and updated BIOS to previous settings (which I copied down.)

When the unit does boot it works great, (like now.)

Could the Nvidia GForce 8500GT video card be the culprit? The fan on the cards works fine and I can find no bad caps.

I should have bought a new computer, lol...

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March 24, 2011 at 05:07:15
Did you verify the new memory is compatible with your motherboard. Just because it fits doesn't mean it is compatible. You may have a RAM density issue.

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March 24, 2011 at 05:27:54
The new RAM is Kingston, and was suggested by the "Memory Configurator" on TigeDirect's website. It is PC2-5300 667MHZ. The one stick is working fine (as I have the system running right now) so perhaps the second RAM slot on the mobo is bad?

I contacted MSI (mobo is G31M3 / MS 7529 V1) and even though they proclaim a 3 year warranty, they said there would be a $35 labor charge if they RMA the board, (Even though it was installed brand new in Jan/2009)

I reseated the Nvidia video card and noticed a couple of areas where the gold bands are worn off, but as I said, the unit is working perfectly as I type this.

Thanks for the input!

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March 24, 2011 at 09:12:06
Provide the full memory module part number/s. Did you buy a dual channel kit?

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March 24, 2011 at 16:26:44
The Kingston packages says:

2GB DDR2 PC2-5300, Dual Channel, 667 MHz,part KVR667D2K2/2GR.

My unit is still running fine with only one of the new RAM sticks but I haven't turned it off all day.


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