Does newly installed display require PRAM reset?

I installed a replacement Hi-Res matte LCD display screen for my late 2007 17" MacBook Pro, and when it booted, the display showed the boot Apple logo, but it was larger than it normally is, and stretched. The screen would hang at that point, displaying some spurious pixels in the bottom area. I reinstalled the original display (which was fine except not bright enough), and it worked fine. The seller of the replacement screen suggested resetting the PRAM. Is a PRAM reset needed when installing a new LCD display, or should the correct display "just work"?

Answered! View the answer I have this problem too

Is this a good question?

Score 0
Add a comment

Free shipping on all orders over $100 or containing a Pro Tech Toolkit!

Browse Our Store

Ever fixed something? That’s Genius.

Share your repair story with #ImAGenius

We Are All Geniuses

Share your repair story with #ImAGenius

1 Answer

Chosen Solution

I suspect that it's not the hi-rez display. Resetting the PRAM may correct it.

Was this answer helpful?

Score 2


The new display said "WUXGA" which is hi-res. Labeling said LP171WU1(TL)(A3) while the original said LP171WU1(TL)(B1). The same problem is reported at Spare Part Number? 17" LCD Display 1920x1200


Well the B1 is a newer version, go with it.


The B1 is the original screen that seems dim now, which I wanted to replace. It is interesting that the replacement part, listed as new, is actually an older version. The A3 also did not have the screw holes along the bottom of the LCD that the B1 has (matching the case), and the wire for the inverter came out of the screen about 2cm to the right.


Add a comment

Add your answer

Lee will be eternally grateful.
View Statistics:

Past 24 Hours: 1

Past 7 Days: 1

Past 30 Days: 1

All Time: 77