Um thinking about your game probs again. I can not understand why try to install so many times and troubles.
When you delete the game do you after go to program files and delete any left over fo3 folder and go to save game area if not in same program file area. I can not remember now, but delete all that left over junk too. If you did not have gfwl already installed for some other games check programs add and remove and delete that too and check and see if any left over folder in program files or c where ever it puts its self, delete every last bit of it. Then reboot you system then try to reinstall it..
In fact after install you should reboot then patch reboot- update gfwl reboot - make any changes as in my first post for the multi cores then try to run the game.. When you put your disc in to install, the pop up if I remember Say yes permissions and or install as run as admin. It should work.. Or maybe when you go to install the game when you get the pop ups to install what ever close all the crap out and go to start /computer right click your drive with game disc in it and click open and look for the set up exe right click it, look near the top click run as administrator. It might install better or right for ya. Do your other discs for fo3 same way..
Have you tried to post at beth forums- it is their game they might help ya faster. I think I have read seems more folks have troubles with the retail disc games- like said I have it but playing my steam goty it installed and works fine or after I did that multi core fix..
Is you system all nice and neat defrags etc. being you have tried and deleted and tried a few times You might want to defrag before your next try. Make sure all the junk extra folders are gone like I said before and you have rebooted, reboot after you defrag too. Might fix ya up man.. Another thing I learned long ago. Most folks always just reboot his system- maybe turn it completely off let it sit off least 3 minutes then power it back on- it like almost resets stuff or something- but being a lap top I guess you turn it off any way- seems common sense- ya Sorry I know you do not leave it on all the time etc- my bad. But still might help ya to turn it off leave it off 3 to 5 minutes.
I am afraid to use such things in Windows 7 maybe you have used the cc cleaner what ever it is before? Maybe you can run that and clean stuff up fix the reg what ever.. But any time I install games I turn off all my security. I turn it off working on videos and stuff too- I only have it on if going to surf the net or normal use etc. Even then I might reboot first so to feel safe it all did load and is running right. Some times turn off stuff and just turn it back on it is not all on or right or might not have the real time protections what ever- but rebooting you can feel pretty safe and waiting 5 minutes or something like that for everything to laod and check for its updates and until all Windows 7 lil crap on your task bar is showing. You know the lil flag etc that tells ya you got updates what ever. Some times all that crap can take 5 or more minutes.
I might watch my hdd led what ever if it is blinking etc it is doing something, but it will normal blink at a slow pace when doing nothing. But if blinking fast etc you know it is doing something in the back ground.. Do not try installing games or nothing for a few minutes after reboot maybe wait like 10 minutes then try, see if your hdd lead is blinking. Well I do not know if lap tops have such things, sorry. That way nothing may be trying to do its business in the back ground and jam ya up. I swear man, Windows 7 can be a mess, I like it and all, but liked my xp pro sp2 more. I can game better in Windows 7 I have more system and 8 gigs of mem now- tho as said most games only see 2 cores and 4 gigs mem.
I do hope you get it worked out- I will beat out my brains and type ya a book trying any way. Try asking google some questions- like this-> why does my [so and so] lap top crash when trying to play fo3 [version etc retail pc goty etc etc]. I use  etc etc because I do not know your laptop model or game version etc- I guess you understand that, but you can ask google questions- You do not have to use it 1 word search at a time, But you might get lots of hits and read some of them and might bamb find your answers faster..
I hope so, I will help if I can- I wish ya the best..