Hi everyone: first of all, thanks for reading this. In my family, I'm generally regarded as the one who's able to solve computer problems, but now, I'm afraid I need to use BleepingComputer's help!
So here's what's happening: my aunt owns an "old" 2010 Dell Studio XPS 9100 gaming PC (Intel Core i7 930 @2.8GHZ GPU, ATI Radeon HD 5870 GPU, 12GB Ram DDR3 @1333 + 1TB Seagate HDD, Windows 7). However, as mentioned in the title, she gets a BSOD saying "SYSTEM_SERVICE_EXCEPTION" once the desktop has loaded (you can click on icons and stuff for 5-20 seconds before it appears). Moreover, the problem only happens when the computer hasn't been started for +/- 12 hours. Once started, you can open/shut it down for as many times as you want without the BSOD appearing, until you leave it alone for the night. Here are some additional and IMPORTANT DETAILS:
- The problem is occuring since I changed the old defective power supply for a new one (Thermalake 600W), brand new and functioning properly on my own desktop PC (tested);
- The old PSU was defective: everytime I wanted to start the PC, I had to start/close the computer thrice before the screen would light up (defective PSU symptom): sometimes, a BSOD would appear also with SYSTEM_SERVICE_EXCEPTION but right after the BIOS and preventing Windows from loading (I could not get to the desktop);
- Ever since I changed the PSU, the computer starts every time;
- Ever since she bought the PC in 2010, she had green dots on her screen: however, this was easily fixed by upping the GPU's clock frequencies with Catalyst Control Center (the ATI 5870 is known for its green dots problem since it tends to underclock itself while on idle). Thought I should mention;
- The motherboard was changed 4 months ago with no problem following;
- All drivers were fully updated with Driver Booster a week ago;
- Ran CCleaner for corrupted registry entries and unwanted files;
- Ran CHKDSK C: /r ;
- Ran CHKDSK /f ;
- Ran sfc /scannow ;
- All 12 gigabytes of ram are working/showing up and seem to be uncorrupted (did not ran a formal diagnostic tool though);
- Antivirus is Avast Free Antivirus 2018;
- Tried reseating GPU several times.
Any ideas that could prevent the BSOD from appearing every time the computer hasn't been started for a while (+/- 12 hours)?
Thanks in advance!