Hello everyone,I recently made a topic,trying to ask for help,but here is a better place/section choosen.

I really need help with fallout new vegas,I will appreciate any kind of help possible.Here is my problem :

First of all,I want to make it clearly,what I did never mess with console commands,or install a player mod.

Problem number 1(very high) - Everyone which make part of NCR,become hostile to me,and I am 'Accepted by them',and did not kill any of them at the open(detected),just with weapons with supressor and at ''HIDDEN'',or at least killed any of the NCR troops which is essential for any mission,It just don't happen when I am using NCR equipment,which is annoying,because I can't use anything different on my body,just that,If I don't want to start a fight with anyone which is related to NCR.

Problem number 2(high) - A NCR ranger spawn on from the nothing,going after me,when I get out of a clinic,where a women/girl,do some implants for you,and I have a video recording of that(please watch for more details),and the worst part is...That NCR ranger spawn constantly after being killed,I tried to shot his hands,to make him drop the weapon,to the ground and pick it,but he get another weapon.

Problem 2 - X-fire video : http://www.xfire.com/video/6103cc (there's a little delay with the video due to high grapichs+my bad PC)

Problem number 3(small) - Sometimes,when I use iron sights or scope from any weapon,the HUD don't show up,and don't even damage my targets but the bullets of course go away,then I have to equip another weapon and the one what I want to use again,to be able to use the iron sights or scope.

Problem number 4(very small) - I can't use ctrl+esc to go for my dekstopI have to use 'ctrl+alt+del',anyone have a idea?Why that happen?

Is there any console comand which make the faction stop attacking you?Or something to help?If someone here need more videos about the glitchs/bugs what I currently need help with,I can record,just ask me,thanks(those bugs/glitchs never happened to my PS3).

Problem fixed,I just had to equip a legion uniform again,and a NCR uniform back,It seems what the game detected wrongly what I was from the legion permanently.