Windows 7: Important Step After Enabling Virtualization in BIOS

man i changed my bios battery but now the server does not boot at all.only the fans are turned on but no screen at all. even i tried replacing the old battery but i'm still having the same issue.the server is not booting any ideas why i'm having this problem. thanks in advance

Time to consult google i'm afraid.

If it died before replacing the battery, than it sounds like you
have a deeper issue than a bettery issue (not preserving BIOS settings
across a power down/powerup). If it's an OEM system contact the
manufacturer. If it's a DIY system, start googling the MB and see if there
are others with similar issues.

If it happened after a battery change, note that once you swap out the
battery, all BIOS settings are lost and you have to set them back up
again. OEM systems only have a few settings, but DIY motherboards will
have many more settings. Don't forget, the date also is lost.

Can you get into the BIOS at all?

Lastly, please fill out your system specs in your profile. That will
answer many questions others might have about your system.

i have a Xeon server with:
Processor intel Xeon CPU E5420 @2.5ghz and count =2
Motherboard:SC5299DP

i can't access the bios at all. i'm getting a black screen but cpu fans and power supply fan is on but the server is not starting even.
it was working fine until i changed the battery. i tried google and didnt find such issue. thanks for ur concern man

Since it's a Xeon - can one assume you didn't build it, but bought it
frm a OEM (like Dell or HP)?

Since only the fans come on, are the fans plugged into the MB or off
the pwer supply? Do all fans come on including the CPU fan or
is it only case fans? Did you verify that the battery is the same
size (voltage) as the old one? Have you thoughht of swammping
the new battery with the old one to see if it boots?

i just cannot find any things like AMD virtualization (AMD-V) function in my BIOS, even i look through the MB menu few times, i still cannot find where to enable this function, will there be any chance that my MB do not have this function?? can anyone help my to clarify this matter to see whether my MB have this function and how to enable it?? my MB is magic-pro MP-AKX Extreme and my CPU is AMD Phenom II 945, thanks everyone~

I enabled VT-d in Bios setting but still I can't install Windows server2008-64bit on VmWare,what should I do?

the cpu is intel & support 64-Bit arcitechture