I have a PC with Windows 7 OS which is having problem booting up. It runs “DOS” check disk and does not complete it and does not boot. By accident I changed the vendor's boot to USB and it booted the OS. I have been unsuccessful changing the setup to boot to USB. The boot precess runs differently each time I try that and never completes. So it looks like MBR on the HD is kaput. Since I am new to Windows 7 I hope I can get to DOS fdisk and restore the MBR.
Or is there any other newfangled way to to this in Windows 7?
At one point the OS start running “automatic updates” , but started with #40 out of 72. My guess is that the original update got interrupted and the result is no boot record on HD. BTW , for 64 bit OS it is painfully slow, but I do not look given horse into mouth. Thanks for your help. Vaclav