fair enough...I followed yancek's thinking....that he posted a short version of the menu.
lets start again.
assuming you have no time ...and you are automatically taken to windows follow options B
Option A
assumes you are automatically taken into linux
with root powers...edit that pesky menu to add a countdown clock
right at the top add these lines please
default 0
timeout 5
color cyan/blue white/blue
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default grub counts from zero so if you want linux change that by counting down the number of titles to the relevant menu item...that are not commented by the # symbols
timeout 5 means countdown from 5 seconds and if nothing changes (by using pressing arrow down...or pressing c or e or enter key ) boot the highlighted entry.
the colours (US spelling) will give you a nice contrast so you know what your default is.
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the menu items to be discussed later
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OPTON B
You are here because you are booted automatically into windows
The easiest is to use a live cd. Do you have one?
Using the live cd run qtparted or gparted or any other good graphical partition tool to find what filesystem formats are on hd1,0 and hd1,1
Since you have not replied....but microsoft has a browser?
I will assume /boot is on hd1,1 = your second drive partition 2
but the live cd can look at your /etc/fstab.
once you know the format...ext3 is likely
you can mount the partition to read/write status to edit it.
eg
Code:
mkdir /a
mount -t ext3 /dev/sdb2 /a
change ext3 to your correct format
change sdb2 to sdb1 if you are sure I am wrong and /boot is on sdb1
change sd to hd if live cd is old and uses hd format.
Now if live cd has a good text editor....just edit by copy and paste
otherwise use vi
eg
vi /a/grub/menu.lst
(if /boot is a sub-folder...because I am wrong change that to)
vi /a/boot/grub/menu.lst
press I for insert and use arrow keys to navigate around ...or delete and add text....once finished do this
Press Escape key to get to vi command mode then type and press enter for next bit
:wq!
reboot and see if it works
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If you are wondering why none of us have helped you with the memtest stuff...its because that is minor issue....lets fix your main issue first and that means at some point time you may like to reply to put me out of my misery.
good luck
Option C is to use your linux install cd in rescue mode but I do not like it.