Working Hackintosh now not working after boot attempt on other hardware

[HackedMac]

Hi All,

 

Could kick myself. In brief, a working 10.5.1 install on an Acer Aspire 5610 working great for several years. While trying to create a new SL disk I discovered that I could boot my working Leopard 10.5.1 install as an external USB drive. Brilliant...I thought. Why not just carry that and boot to it from my work DELL laptop then I wouldn't need to lug two computers on the road. It didn't boot from the Dell. No big deal I thought...I'll just put it back in the Acer and go back to the way things were. MY BAD!!!!

 

Upon putting the drive back in the Acer and powering up...it now no longer will boot past the Apple grey screen. When it goes to the blue screen ... the screen just flickers every so many seconds. It must have messed up my video kexts or something like that.

 

Anybody got any ideas on how to fix??? I vaguely remember that there is a way to delete the kext cache and make it rebuild again. But I can't remember. Would appreciate any help. I have about three years of data and all my iTunes on that drive and I miss my Hack!!!!!