My Acer Aspire 5612z, Dual-core celeron, 2GB ram, vista home premium 32bit, has two separate problems. Screen is filled with vertical red blue and white vertical stripes, if I tap the screen frame then the picture is ok for 30 mins or so, then goes stripey again. (Poss fault on FL board?). Second, Laptop boots, 20 seconds, to Acer screen then stops. Can only switch off power from that point.