Cannot install x64

theMickster · Feb 11, 2016

I bought an Optiplex 755 SFF with Vista Business installed. I then bought a Vista Business disc with x86 and x64. Even after formatting, x86 installs without a choice given.

Does it matter that I have no boot manager?

DukeIShere · Feb 11, 2016

i never seen a disk with windows x86 and x64

USAFRet · Feb 11, 2016

DukeIShere :

Sure there are.
32bit and 64bit on the same disk. Obviously, you can only install one or the other.

skit75 · Feb 11, 2016

I've never seen one either, to be honest. I've seen SP discs that contain both formats. Never seen a single disc with both Windows OS's on it though.

Do you have an example USAFRet?

skit75 · Feb 11, 2016

It looks like Dell does not support x64 OS's on a 755.

skit75 · Feb 11, 2016

If you don't like twerp answers, do your own legwork..... I found the above with a single google search.

theMickster · Feb 11, 2016

Thank you skit. The first answer on here that doesn't show the poster to be a hopeless nerd.

USAFRet · Feb 11, 2016

One and only one warning to all.
Lay off the personal insults.

skit75 · Feb 11, 2016

"Lock-On Acquired...... Hammer Away!"

My snarky filter was temporarily disabled.

theMickster · Feb 11, 2016

Warning heeded.

I ran upgrade advisor. It cleared my 755 for x64.

I've had no trouble with Vista thanks to having enough RAM and a 4-core, but I acknowledge that others have had a lot of trouble.

USAFRet · Feb 11, 2016

theMickster :

It may be an issue of what you 'bought'. Vista has not been available for sale in the retail space for quite a while.

skit75 · Feb 11, 2016

It could also be that sure...... Microsoft identifies your hardware as compatible with x64 but it is Dell's BIOS and they are not supporting x64 for the 755. I have C2D's from that era running x64 OS's. The hardware is capable but not while under Dell's umbrella, for that model.

USAFRet · Feb 11, 2016

For that 755:
http://www.dell.com/downloads/global/products/optix/en/opti_755_techspecs.pdf

pg 9:

As to why it did not work? No idea.

theMickster · Feb 11, 2016

The PC came from a firm of accountants and the disc is a Microsoft one. The above tech sheet shows that Vista Business x64 might be pre-installed. Mine had x86. I found somewhere saying that some PC builders lock a system to one or the other.

I'm trying Dell support but without much luck so far.

skit75 · Feb 11, 2016

Microsoft's upgrade adviser can say whatever it wants. Dell holds the keys. To put it another way.... If you pulled the CPU and RAM off of that motherboard and put them into a generic or 3rd party motherboard for that socket..... you would be able to install an x64 bit OS. You just can't do it on Dell's motherboard.

theMickster · Feb 11, 2016

Oh well. I can at least tell myself I'm one of the luckier ones with Vista working at all.

FALC0N · Feb 12, 2016

I'm sure where you got any of this, skit75. There is no evidence that the 775 has issues with 64 bit.

skit75 · Feb 16, 2016

FALC0N :

It is in Dell's manual for the 755, just as USAFRet posted. Specifically, page 9 of the Dell Optiplex 755 User Manual.

FALC0N · Feb 16, 2016

You mean the page where it shows the factory shopping options, which include Vista Business x64? I'm not sure what you are seeing, but I don't see any evidence of problem on page 9. To the contrary, it shows factory 64 bit configurations.

USAFRet · Feb 16, 2016

It specifically says Vista Business x64 will work.
Apparently, that is what the OP has purchased (from where?)

I do not know why it is not working.

skit75 · Feb 16, 2016

Actually, I did not see that.

I do have an Optiplex 745 here with original Vista Business CoA that had the same issue though. Only thing I can think of is to go flash the BIOS. Dell is hosting Vista Business x64 drivers on their site for the 755, including (2) BIOS updates. What else could possibly stop the install unless the content disc is not authentic? I work for a MRR part-time and have never seen an OS disc that contained both x86 and x64 versions of the OS on a single disc. Not saying they don't exist but they certainly are not distributed to us.

FALC0N · Feb 16, 2016

I think it's the wrong install media.

USAFRet · Feb 16, 2016

FALC0N :

Which is why I've asked 'from where'.
Twice.

Cannot install x64

Reputable

Reputable

Titan

Splendid

Splendid

Splendid

Reputable

Titan

Splendid

Reputable

Titan

Splendid

Titan

Reputable

Splendid

Reputable

Splendid

Splendid

Splendid

Titan

Splendid

Splendid

Titan

Share this page