Bad Pool caller

[prodda]

Hi guys - I wonder if someone can help with an irritating problem.

From time to time I get a BSOD with Bad Pool Caller and the stop error: 0x000000c2 (0x00000007, 0x0000CD4, 0x02c00080, 0x8507F408)

I've done as much research as I can but haven't really got anywhere. I built my rig about 9 months ago and recently upgraded the video card, PSU and added additional memory. However, I was getting the BSOD before I upgraded and still get it now. The only pattern that I can see is that Windows Media Player 10 is usually playing when the BSOD happens. Can anyone help please?

Phil
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Athlon 64 3000+ (Newcastle F,C,O)
Retail heatsink/fan
MSI K8TNEOFIS2R (BIOS 2.2)
1024mb Kingston DDR400 PC3200
Antec Neopower 480w PSU +3.3/30A +5/38A +12/18A + 15A - 4 case fans
CPU 36c idle 54c load
Case 36c idle 43c load
ATI Radeon 9800 Pro 128 mb (Arctic VGA Cooler)
2 x 80gb SATA Maxtor Diamondmax
NEC2500 DVDRW
MSI 16x DVDROM
Onboard sound
19" Dell 1905FP TFT
Windows XP SP2

[Platypus]

It may be more technical than you want to get, but did you find this information:

http://support.microsoft.com/kb/314492/EN-US/

[prodda]

Thanks Platypus - I could just about understand it and managed to locate a minidump file for the last BSOD - unfortunately, I can't open the file (something to do with symbols?). I've looked at event viewer which shows a large number of warnings against ati2mtag in category DVD-OV. I assume this could be a problem related to the radeon 9800 pro but I was also getting the bad pool caller error before I installed the radeon (had an FX5600 before). I've tried a lookup of the error codes and it seems to show something about trying to free up memory that is already free. Sorry to be a bit thick but that's beyond my reach. Any help much appreciated.

[Platypus]

trying to free up memory that is already free

That seems to be what it comes down to, can be a programming error in a driver, but since it occurred with the previous video, maybe something common to both. DirectX could be possible, what version is on the system?

I think the first thing I would do is if Media Player is happy to operate with the low color depth (haven't tried), revert the video to a standard Windows VGA driver and give it a good workout. If the BSOD seems to have gone, I'd remove all other video driver devices in Safe Mode, and install a recent, stable version of the ATI drivers (not necessarily the very latest release) and see how it goes.