To help diagnose it, try these free diagnostics: Initial Hardware Diagnostics
If it's a rootkit, be careful on the removal - some of them can render your system unbootable.
Please provide this info for additional information: Blue Screen of Death (BSOD) Posting Instructions
I suggest making a system restore point just in case - and having a repair disk handy to boot from (let me know if you don't have one and I can suggest a link) and use System Restore.
I know this is Vista, but I suggest removing Daemon Tools because of this:
Daemon Tools (and Alcohol % software) are known to cause BSOD's on some Win7 systems (mostly due to the sptd.sys driver, although I have seen dtsoftbus01.sys blamed on several occasions).
Please uninstall the program, then use the following free tool to ensure that the troublesome sptd.sys driver is removed from your system (pick the 32 or 64 bit system depending on your system's configuration): DuplexSecure - FAQ
Some free alternatives (I don't use them, so I can't comment on them) KernSafe iSCSI initiator, Virtual CD/DVD-RW Emulator, Virtual Encryption Disk and Virtual CD/DVD-ROM Emulator All-in-One free software. MagicISO - Convert BIN to ISO, Create, Edit, Burn, Extract ISO file, ISO/BIN converter/extractor/editor
If it's not at fault you can easily reinstall it once the system becomes stable again.
Please visit the Dell website and ensure that all of your drivers are updated. At the bottom of this post is a list of drivers with dates - and below that is a list of links with more info about those drivers. These lists can help you determine what programs/devices these drivers belong to.
If the hardware diagnostics and driver updates don't fix it, post back and we'll try some other tests. The following info is just FYI, I've already addressed the issues that I saw in the above paragraphs
- Further info on BSOD error messages available at: http://www.carrona.org/bsodindx.html
- Info on how to troubleshoot BSOD's (DRAFT): http://www.carrona.org/userbsod.html
- How I do it: http://www.carrona.org/howidoit.html 3RD PARTY DRIVERS PRESENT IN THE DUMP FILES
http://www.carrona.org/drivers/driver.php?id=sptd.sys http://www.carrona.org/drivers/driver.php?id=PxHelp20.sys http://www.carrona.org/drivers/driver.php?id=atikmdag.sys http://www.carrona.org/drivers/driver.php?id=SynTP.sys http://www.carrona.org/drivers/driver.php?id=bcmwl6.sys http://www.carrona.org/drivers/driver.php?id=k57nd60x.sys http://www.carrona.org/drivers/driver.php?id=rimmptsk.sys http://www.carrona.org/drivers/driver.php?id=rimsptsk.sys http://www.carrona.org/drivers/driver.php?id=GEARAspiWDM.sys http://www.carrona.org/drivers/driver.php?id=rixdptsk.sys http://www.carrona.org/drivers/driver.php?id=stwrt.sys http://www.carrona.org/drivers/driver.php?id=sbtis.sys http://www.carrona.org/drivers/driver.php?id=CtClsFlt.sys http://www.carrona.org/drivers/driver.php?id=sbapifs.sys http://www.carrona.org/drivers/driver.php?id=BCM42RLY.sys BSOD BUGCHECK SUMMARY
sptd.sys Sun Oct 11 16:54:02 2009 (4AD245EA)
PxHelp20.sys Wed Mar 12 21:57:44 2008 (47D88A18)
a5qev0g5.SYS Tue Jul 14 17:12:41 2009 (4A5CF4C9)
atikmdag.sys Sat Nov 15 00:21:15 2008 (491E5C4B)
SynTP.sys Fri Oct 31 13:10:05 2008 (490B3BED)
bcmwl6.sys Wed Oct 22 20:41:24 2008 (48FFC834)
k57nd60x.sys Thu Jun 19 21:47:01 2008 (485B0C15)
rimmptsk.sys Fri Feb 15 04:01:16 2008 (47B554DC)
rimsptsk.sys Sun Jul 29 21:42:56 2007 (46AD4220)
GEARAspiWDM.sys Mon May 18 08:16:53 2009 (4A1151B5)
rixdptsk.sys Sun Jul 29 22:54:01 2007 (46AD52C9)
stwrt.sys Fri Mar 06 11:57:01 2009 (49B155DD)
sbtis.sys Thu Oct 09 04:55:41 2008 (48EDC70D)
OA008Vid.sys Tue Jan 06 02:27:51 2009 (496307F7)
OA008Ufd.sys Wed Nov 26 01:02:03 2008 (492CE65B)
CtClsFlt.sys Mon Oct 27 22:48:03 2008 (49067D63)
sbapifs.sys Fri Sep 12 00:30:16 2008 (48C9F058)
BCM42RLY.sys Tue Nov 11 22:07:23 2008 (491A486B)
Loading Dump File [C:\Users\FUBAR\_jcgriff2_\dbug\__Kernel__\Mini061112-01.dmp]
Built by: 6002.18607.x86fre.vistasp2_gdr.120402-0336
Debug session time: Mon Jun 11 07:04:53.066 2012 (UTC - 4:00)
System Uptime: 0 days 1:19:56.990
Probably caused by : memory_corruption
Bugcheck code 1000007E
Arguments c0000005 8a68ea9f 8b557c58 8b557954
BiosVersion = A06
BiosReleaseDate = 04/23/2009
CPUID: "Intel(R) Core(TM)2 Duo CPU T6500 @ 2.10GHz"