Can Not Open Exe Or Any Other Files

Here is a rundown of what happened. I was on the computer, not doing anything online and suddenly the computer shuts down and restarts. Upon restarting, windows (I'm running Windows 64 bit Home Premium) appears to not be able to open. It promptly displayed a new loading bar with "Loading Windows Files" or something like that. I attempted to reboot in safe mode, lastest working config, etc but nothing worked. I ran hardware checks including memory checks and nothing appeared to be wrong. When trying to run the repair utility, there was a startuprepairoffline error and the issue could not be fixed. I attempted a system restore but it said the restore failed. However, upon restarting my computer, it loaded to Windows and said restore was successful. Now that I somehow have Windows up, I am unable to use any programs of any kind besides cmd, regedit, etc. I have attempted to download the exe_fix_w7 file however it will not merge with the existing registry as it says that some are in use. I have tried both in safe mode as well as normal but to no use. I attempted to manually edit the lines which seems possible however I'm unsure if I did it correctly. So basically I'm stuck at not being able to open any files at the moment. I'm still not entirely sure there isn't something wrong with the hardware as on start up the computer now makes a sound on the Dell splash screen as if something is shutting down internally, however the BIOS diagnostic had everything passing so it may be nothing.