Today, from instructions in Speedpatch thread, I set my overclock profile to:

use the ideal profile but change the upthreshold to 95
and change the samplerate to 300000
enable vdd1 and vdd2 (change to 1)
set powersave_bias to 20
and change maxfreq to 805
and change ignore_nice_load to 0

now my telephony functions are BROKEN. phone still asks for SIM pin, which I put in correctly (tried 2 SIMs). but after booting there is no reception icon, and cannot send sms/make calls. Upon booting I do NOT get "all telephoney functions disabled" message.

If i boot with no SIM, the icon for no SIM shows. Tried reverting back to old settings, re-installing kernel 48. no go. now im trying to reflash but my laptop wont recognise my device.! have flashed my n900 1000's of times in the past, but havent for ages (thanks to backupmenu!). since then I have this new computer that has windows 7.. I hope someone can help! thanks!!

edit: I plug my n900 into my PC and it says "installing drivers" it gets to last step then says "device unplugged". which it is not. tried multiple times in all direct USB ports. same after pc reboot also.