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racnad
15/01/2009, 18h06
All:

I'm trying to fix a Toshiba Satilite laptop for a friend. It was blue-screening shortly after loading Windows XP.

The blue screen message referred to a Page error in non-paged area, and a google search suggested a RAM problem and messages recommended running memtest.

I opened up the access panel and found two memory slots containing two 512mb memory modules. One is a Samsung and the other is a Kingston. My friend bought this laptop from another person so I don't know the upgrade history.

Here's the result: If I run memtest with both memory modules in, it crashes (unexpected interrupt), usually within a minute of starting. But if I do memtest with just ONE memory module (either one), they both pass all 8 memtest tests with no errors. Both moduals also seem to pass in either socket, provided the other socket is empty. But with both at the same time, memtest crashes every time.

What should I make of that?

Also, before running memtest, I was attempting to fix the computer by running chkdsk /F or chkdsk /R. But now, even with one memory modual in (which passes memtest), I get a blue screen before the desktop comes up, safe mode or normal mode.

Did I corrupt the OS by running chkdsk while there was a hardware issue?

Wichetael
25/01/2009, 14h46
A system with one stick or a system with two sticks is a different system. Timings will be different, bus utilization will be different, memory interleaving can come into play, the system could be using dual channel, etc., etc. More than likely you have a hardware issue, be it in the memory modules, motherboard, CPU, PSU, or even any other component connected to the PC. Treat this like any other hardware issue and diagnose by elimination of factors. Read the memtest FAQ for some pointers. Try to test with two different memory modules of the appropriate type.

And yes the software installation is in all likelyhood messed up, probably not even from the chkdsk run, but also from simply running on a defective system. Start from a live CD or reinstall the system to see if you have a properly working system again. But solve the hardware issue first.