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Win 7 not booting without CD
Hi there,
this is my first thread here and I'm aware, that there are many threads
concerning this topic. I search the web for two days now and did not find
an answer to my problem.
The Computer is a Lenovo Thinkpad Edge E531.
So here's what happens:
- Windows 7 Professional 64-Bit only boots normal when Installation CD is inserted
- if I don't press a key when it says "press a key to start from cd" Windows starts after a few seconds
- Without CD, the screen remains black after the thinkpad logo and a blinking cursor in the top right appears
Here's what I tried so far:
- Reinstalling Windows several times, format with Installation CD and GParted
- repair Startup with Installation CD - several times
- do the "bootrec /fixmbr", "fixboot" and "rebuildbcd" - several times
- bootsect.exe /nat60 c:
- try to update the bios
- change boot order --> exclude other drives etc.
- set bios to default values
- mark system drive as "active"
- tested RAM with memtest86 --> 6 passes without failures
- tested HDD --> all normal --> I can connect it as external drive and it works
The weird thing is, sometimes, after the fixmbr/fixboot-stuff, windows boots once or twice WITHOUT
the cd, then the cursor starts blinking again on reboot or shutdown->boot, as if windows somehow
overwrites mbr or bootloader settings.
Sometimes, when defaulting the Bios-settings, i can boot once or twice without cd, then the blinking
cursor is there again.
One time it said "bootmgr missing", so I repaired the startup with the installation cd, could boot once
or twice without cd --> cursor again...
The bios update didn't work, cause sometimes it says "Memory allocation error", other times there's
an 215 - Cannot load BIOS from ROM - Error: 1604
The problem is, I don't know why it works when sometimes it works.
I'd really appreciate any help!
Best regards,
Felix