[cool_nash]

unmountable_boot_volume appears whenever the window start loading that is when i turn the pc on

[Elvandil]

History? Is this new? Did you change anything?

Have you tried a repair with the DVD?

[cool_nash]

have done nothing to the stop /window error

[cool_nash]

have just shut down the pc

[cool_nash]

i didn't change anything apart from upgrading my memory to 512mb from 256

[Elvandil]

Did the problem occur right after adding the memory or later?

Did you try a repair?

[Rich-M]

Originally Posted by cool_nash

i didn't change anything apart from upgrading my memory to 512mb from 256

Have you tried taking it out? Incompatible ram will show up in so many different ways....