no usb, no video after ram out/in

Custom / Amdfx60 on a8n32-sli delu...
January 6, 2009 at 05:46:38
Specs: Windows Xp, amdfx60(939) 2g
So this past weekend my dad suspected his PC's memory was bad, he asked me if he could borrow my memory to test his system with it and ended up not even using mine. I had taken the memory out for maybe 2 days and put it right back in. After replacing the memory last night I hit the power button and waited... no video, no keyboard power no mouse... the case fans are on, the CPU fan is on, the HDD is spinning, the video card fan is on, but here is the funny thing, the USBs front and back wont power the keyboard Logitech G15, or mouse Logitech G5, but in addition to the USBs from the Mobo not powering the Keyboard or mouse, I also have a PCI 2 port USB card installed and it will not power the USB devices either. I tried reseating the ram, then using only 1 stick, then swaping them around, and still nothing. No video, no USB. Build:
ASUS A8N32-SLi Deluxe
AMD FX60 (2.6ghz) dual core socket 939
Thermaltake Big Typhoon
ULTRA X-connect2 500W PSU
Coolermaster CM Stacker
EVGA 8800GTS 320MB PCIe 16X
2GB 2X1GB OCZ PC3400 184pin Dual Channel
Western Digital 250gb wd2500ks
Linksys PCI Wireless G adaptor
Lite-on DVD/Combo optical drive


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January 6, 2009 at 07:14:40
OK, hopefully you unplugged the computers before removing the RAM. If the CMOS battery is weak or dead the CMOS will reset to default values. In most systems default values do not support legacy USB devices. That would mean that USB keyboards may not work in the start up screens.

If you DIDN'T unplug both computers you may have damaged something.

Things to try on your computer. Re-seat all cards, cables, RAM. Re-seating is disconnect and reconnect the device.

If that doesn't help then try Clearing the CMOS. There are two methods to clear CMOS. Removing the motherboard battery for a period of time might be easiest for you.

The battery is a silver quarter sized coin shape battery. Take care when removing to note which side goes where and to not bend the contacts.

After leaving the battery out for a few minutes re-insert it and then start the computer.

Immediately enter the BIOS (setup screens. If you have successfully cleared the CMOS the date will be way off.

You will need to reset values in many screens. Default values may work fine for most screens. The time and date need to be corrected of course. The option mentioned above for legacy USB support need to be set to Enable.

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January 6, 2009 at 07:26:21
Personally, I don't see the advantage of using a USB mouse or keyboard. Unless they have some sort of specific function that requires USB, you'd be better off using the PS/2 ports. Why sacrifice the USB ports & let the PS/2 ports (which are designed for keyboard/mouse use) sit idle? It's not like your board doesn't have them:

Is it just me or am I missing something?

EDIT: OK, I just googled up your keyboard & mouse & see that they have a bunch of uselss crap, er, I mean, extra features that require USB to operate.

So what happened when your dad used your RAM...did it correct his problem? Is possible that he damaged it?

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January 6, 2009 at 10:47:11
It sounds like you might be missing the +5 volts. Try removing all power and reseating the motherboard power connector a few times.

NTVDM = NT, Win2K and WinXP Virtual DOS Manager

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January 6, 2009 at 12:33:58
Ok, my Dad never actually used the RAM in his system. He took it to his house, got inside his machine and realized it was clogged with dust bunnies and cleaned it out well and that solved his problem, his system was overheating. I did remove the power cable before removing the RAM from my system and it was unplugged when I re-inserted the RAM into my system. I will attempt at resetting CMOS, I am familiar with this procedure. I will also try re-seating all hardware and cables. I am curious, does the video not even bringing the monitor out of standby have any relation to no +0.5v? Its a PCI-e X16 card with a 6wire PSU cable. Or does the system fail to even get that far if there is no +0.5v?

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