Hi everyone! So here's my problem...I've been having issues with crashes for a while. I finally figured out that the CPU was overheating due to worn thermal paste so fixed that, however the PC kept freezing randomly and my Nvidia graphics driver kept crashing. I also noticed an svchost process was using up heaps of memory. A google search led me to the Malwarebytes site with a post about a bitcoin miner using up heaps of memory and creating heavy load on the GPU which I figured could be my problem. I ran RogueKiller 64, Malwarebytes Anti-Rootkit then Combofix the same as the instructions in the thread. Combofix removed three files, two of which were temporary files but I don't have access to the log to know exactly what they were. After I finished running Combofix my system started freezing up even worse than before so I did a reboot. It booted up slowly the first time but no signal was getting to the monitor. Now it doesn't seem to boot at all. Having just read the posting rules I realise now that running Combofix was probably a stupid idea but is there any way to repair whatever I've done to it? I'm running Windows 7 64 bit as well. Thanks for help in advance.