I have a HP hp DC 7800 Convertible Mini tower having OS windows 7. Some days ago, I faced a problem called "physical memory dumping error". I cleaned my PC perfectly, there is also no overheating and power supply is also correct. Than I think it might be due to RAM, but when I did Windows Memory Diagnostic Test, there was no fault in RAM. I also installed windows but the error is still. My Hard Drive is giving error when I downloading any thing. It mens that Physical Memory Dumping error is due to Hard Drive. Could some one tell me how to fix this error?? I'll be thankful to you.