After removing a virus with malwarebytes the next day the computer (Dell studio xps running Windows 7 64 bit 8Gb) will post but then goes to black screen with blinking cursor and continuous beep. Removed and reset memory, CMOS battery, etc. BIOS sees the SATA drive. Booted from Win 7 disk - recognized the hd but disk repair did not work - was able to restore to a restore point, but after reboot, same thing. Finally took out hard drive and placed in another Dell computer to see if it was the drive or something else - it's the hard drive - computer sees it, but after post goes to black screen. Attached to my Mac and was able to back up files, but would really like to be able to repair windows to keep programs, etc. Any suggestions or just do a fresh install?