Acer Aspire recover W7 from DVD not from disk partition

Hi,

I have Aspire 5742ZG laptop with 64-bit W7 OEM-licenced. A few weeks ago it started to freeze regularly. A tried to update all software, antivirus, all drivers (using windows automatical search and then manually), I launched disk-checks with none disk-errors. Beside W7 a have ubuntu installed which works without any problem.
So I tried to reinstall windows using acer-recovery mode, first I tried the recover with preserving my data. At the end of the process it wrote something like: the system could not be installed on this hardware.
Then I tried to use recovery without preserving my data and this seemed to be successful and I obtained W7 with factory settings. But freezing continued and after many crashes I wasnt able to launch windows (it repeatedly wrote about configurating system then that configuration failed, returning changes back, shutting down, starting, configuring, failed, changes back....).
So now I would like to renew system from recovery DVD which I have burned about 2.5 yeras ago when I bought my laptop.
But when I insert first of 4 recovery DVDs it writes reading files and then I get to Acer eRecovery with options only recover from disk partition but not from inserted DVD.
In bios in boot menu I have on first place: IDE1: HL-DT-STDDVDRAM GT32N
Alt + f10 bring me to the same acer recovery mode.
Any idea how to force laptop to boot from inserted DVD. Thanks. :)

Work through the steps for Overcoming Windows 7 Installation Failures - Windows 7 Help Forums.

This is what we know works, regardless if it requires wiping Ubuntu since we are a Window Forums which specializes in perfect Win7 installs overcoming all barriers. So I would wipe the HD to get it cleanest.

Then if you still want Ubuntu use EasyBCD to add it to a Windows Dual Boot menu as shown in Dual boot Ubuntu-Win7

Thanks for replay. I have already made a clear installation of W7 but I have not wiped all disk but I installed it to disk part of previous W7 installation. So the disk partitions with ubuntu should not be impacted but only the dual-boot menu after starting up of computer disappeared. I look into the link dual-boot you gave me. But windows seems to run without freezing and its important for me now. :)

If the problem is resolved then you can mark the thread Solved at top.