Sup. I'm having serious problems with my Windows 7 Ultimate 64-bit. This is a bit complicated, so bear with me. I just got a new motherboard (MSI Z97 PC Mate) and CPU (i5 4440). I had to format my system SSD (Samsung 840 Evo) to make it work with the new chipset. Then I installed Windows (using a DVD made with an .iso downloaded from the MyDigitalLife Windows 7 Repository) on it and used Daz's loader 2.2.1 (default settings) to activate. Unfortunately, the system does all kinds of weird things now: - Windows Explorer crashes a few times every day (could be because I used QTtabbar and Classic Shell to mod it, but I don't think that's the case considering I'm having other issues) - Firefox crashes frequently as well (could be because I imported my profile from before the mobo & CPU switch) - WinRAR and 7zip can't unpack some archives (CRC errors) which unpack no problem on another PC. Doesn't concern ALL RARs, just some. It does concern some RARs I made myself. This is REALLY suspicious. - can't install Dying Light (shows errors after a few seconds). The very same .iso installs no problem on another PC. - last but not least, I get one or two BSODs every day and it looks like the system itself is the culprit (link to dumps at the bottom of the post) - if that helps: one of the BSODs happened when I ran DXDiag, another one happened when I was using pan & scan keyboards shortcuts in MPC-HC and another one happened when I was playing one clip in MPC-HC and a second one in Windows Media Player. Things I did etc.: - tested each memory stick with bootable Memtest - tested both slave HDDs with Hard Disk Sentinel (not that there are any system files on them) - tested the CPU with Intel Processor Diagnostic Tool - installed Intel Chipset Device Software - used Samsung Performance Restoration to restore the SSD's performance (I think the BIOS of the previous mobo was set to IDE instead of AHCI because I didn't know AHCI even existed until about a week ago) - flashed the mobo with the newest BIOS - the graphics card (MSI GTX 970 Gaming 4G) was fine before the switch, runs benchmarks (Unigine) and Dying Light just fine (didn't test other games) - installed all updates with Windows Update - uninstalled Intel's USB 3.0 driver when I realized it caused one of the BSODs A few questions: - can the Windows loader cause those problems? Or does it just activate it and doesn't change key system files like ntoskrnl.exe or watchdog.sys? - how can I test my SSD to see if it's definitely OK? HDD testing software doesn't work for obvious reasons. - should I install Intel's drivers for the CPU's integrated graphics? Dumps (viewable with Nirsoft BlueScreenView): is.gd/mnb33 is.gd/tyh38 I shortened those links because this forum wants me to have 20 posts just to post normal URLs for some reason.