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Memory, video and overclocking errors

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6 replies

by nepenthe

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Self built machine in 2003 worked great until recently. It's a P4, 3.0 ghz, Asus P4C800 Deluxe board with ATI 9600 video card. Memmory is 2 x 512 DDR400. All drivers up to date. Bios not flashed since a year ago. When I start up the monitor does not load and I receive an over clocking error (F1-F2 choice). I never overclocked and checked the BIOS for settings. I shut down machine and start up again. This time all works fine except only 1/2 the memory is registering. This happens 3 out of 4 start ups. Reseated memmory with same results. Memory is in correct sockets A1 - B1.

6 replies

by mjd420nova

The first thing I'd do is replace the battery for the CMOS, then try reseating the video card. Something is not quite right with the memory and it may be interfering with the video driver, maybe a bad memory card. Really strange the memory quirk and video overclock error, could just be the CMOS, only marginal voltage from battery will yield some confusing results.

by nepenthe

It was the power supply. I did change the Battery with no change and found a mem slot bad. When I put in the new PS the errors stopped. So far so good. I was sure glad it was not the board.

by fungus-among-us

This statement confused me...
"When I start up the monitor does not load and I receive an over clocking error (F1-F2 choice)."

That's a moot point since your next sentence is " I shut down machine and start up again. This time all works fine except only 1/2 the memory is registering."

I kinda agree with the first poster... change out the CMOS battery. It's cheap $2-4, and may be the root of your problem. The only thing that concerns me though is the fact that it's only seeing 1/2 of your installed memory. I've run systems with DEAD CMOS batteries before, and the only thing I had to reset (everytime I rebooted), were the drive parameters (older boards that didn't auto-detect), and speed/voltage settings (I DO OVERCLOCK.... even brand spanking new systems).
You could also try the "other dual channel slots" (A2 & B2) to see if that corrects the memory issue.

I once owned a P4C800... it was a good board. As a matter of fact, I sold that P4C800 with my 2.6C (ran at 3.05GHz) and got an Abit IC7MAX to replace it... I should've stuck with the ASUS.

by nepenthe

You help point me in the right direction as it was the power supply. Put in a new Antec 550 Watt and all issues resolved except for the memory slot was bad. Thanks

by nepenthe

Seems that a memory slot is bad - not the memory. After switching around the memory and buying new - the one slot does not register any mem. Did not change the battery yet but after adding memory I tried to start machine and no go until I accidentally hit the wad of power supply wires slightly and the machine started and then went down. Seemed like an electrical short. It is now up and running with no errors but I will replace the power supply unless it is a short on the board.

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