Instalation Error 0x800706ba

[Xserabis]

Hello everyone. I need to reinstall win7 on my friend pc. He got 2 discs, i tried on both but all failed. It's 32bit Win7 Ultimate. When i choose disc and click 'next' installer shows error with code 0x800706ba. One disc is clear on IDE connection and it's destination for os disc. Please help me!
Edit#1 Diskpart cant connect to RPC server.

 

[Ztruker]

Are you booting the DVD disc or running setup.exe from the DVD disc?

 

[Xserabis]

Booting from dvd

 

[gregrocker]

For more than 3 gb RAM you'd definitely want 64 bit.

Work through the steps to Troubleshoot Windows 7 Installation Failures - Windows 7 Help Forums

 

[Xserabis]

Yes, i know that for more than 3,25gb ram i need x64 but my friend had only 3gb

 

[gregrocker]

OK then 32 bit would be best if he doesn't plan to upgrade RAM. If Processor far exceeds RAM performance while observing the Resource Monitor then that might be a reason to do so. But he wouldn't want to increase RAM if the processor couldn't handle the extra RAM.

Continue with the troubleshooting steps which resolve all install problems.