So ive always been a ps3 gamer and just recently i bought my first gaming PC and a copy of Skyrim. knowing nothing about how to install mods,i followed youtube guides to download the SKSE and the nexus mod manager, and then downloaded a bunch of mods, such as skyui and deadlydragons. at first it all went perfectly yet after installing some more mods i am uncapable of playing skyrim, as my game crashes after the bethseda logo appers, just before the main menu.

my question is obviously is there is someone out there that can tell me what im doing wrong or if they have faced similar problems. i am aware i may be asking something vary obvious but sadly i know very little of computers and would greatly appreciate any help that can be given.

Crash after the Bethesda logo is quite clear symptom of "a missing master". That means you have a mod that also requires something you don't have.

Post your load order, please.

You'll also want to use BOSS, and possibly Bash, but your load order will tell us that. You can export load order from NMM if I recall correctly.

We'll need some information first.

1. System specs - http://www.gamesas.com/topic/1122570-how-to-dxdiag/

2. Your load order. The easiest way to post this is to go to your C:\Users\[Username on your computer]\AppData\Local\Skyrim folder, open the file plugins.txt in Notepad, and copy and paste the contents here.

3. Have you sorted your load order using https://code.google.com/p/better-oblivion-sorting-software/downloads/list?

4. Did you check all of your mod readme files to make sure the mods you're using aren't incompatible with one another, or to make sure you got other mod files that some of them depend on?

Yep, let us know your load order. It's most likely that you're missing a mod that another mod needs in order to work.

Before you do ANY further modding, read the following tips and you'll avoid having issues. A modded Skyrim is incredible, but also comes with technical issues you need to be aware of...

1) Do your research - always read the mod description and readme file, and pay attention to any special instructions for installation, requirements and notes of mod incompatibilities.

Read, read, and read again before installing anything. Don't just read the mod description, but also check the mod comments section - the author may give additional instructions on the comments page (or if he's stopped modding altogether and there were still issues with the mod then the community will have helped with suggestions.)

2) Don't install loads of mods at once. It's tempting, but if things go wrong you won't know what caused it. Install a mod, play for a few hours until you're sure you're happy, then install another...and so on. If I had a dollar for every person I suggested this to but that didn't follow the advice and regretted it later, I'd be a very rich man! Another reason is performance - you need to test thoroughly that your pc can handle everything you throw at it.

3) Never uninstall a mod and continue with the same save game. Your game may break as data from mods gets embedded into saves. If you want to uninstall a mod you need to go back to an earlier save game from before you first installed the mod, or start a new game. This is one of the reasons point 3 is so important.

4) Load order is very important and will avoid issues - download and use BOSS (http://code.google.com/p/better-oblivion-sorting-software/downloads/detail?name=BOSS%20v2.1.1%20Installer.exe&can=2&q=) to make sure your mods load in the correct order. Many reported crashes and other issues are solved by using BOSS.
5) If using mods that edit leveled lists (such as creatures, items, etc), then mods that edit the same lists will conflict and you won't see all intended changes - you need to download Wrye Bash to make a "bashed patch" (unique to your game) which will merge the lists together so you get to see all the new content and make sure all mods work as intended. Wrye Bash may seem complicated at first, and the guides don't make it seem easy, but really it's a case of two or three clicks and you're done.
6) Use TES5Edit to clean Skyrim. Bethesda left update.esm and the DLCs all dirty - if you don't clean these then you may get CTDs when you run mods - most noticable when running lots of mods, but you might also just get unlucky! There's a good video on Youtube by Gopher explaining how to do this and why you need to do this.

If you haven't done so already, watch Gopher's tutorial videos - http://www.youtube.com/playlist?list=PL20E326325BADAE44 - they're really useful.

firstly, thanks to all trying to help. im trying to get the info you asked for but as i said im pretty useless with pc′s and it might take me a while to get it all sorted out. at this point; i can say that at no point i used BOSS, i didnt even know what it was. The load order im guessing its what appears in the skyrim data files and its:

dawnguard.esm

dragonborn.esm

hearthfires.esm

Skyui

Lawrens RNG guard.esp

Extended Slider colors.esp

animated weapon enchants.esp

dynamic fires.esp

birdsofskyrim.esp

footprints.esp

wetandcold.esp

wetandcold - ashes.esp

atlasblackreach.esp

water.esp

water DB waves.esp

deadlydragons.esp

cloaks.esp

staticmeshimprovement.esp

betterquestobjectives.esp

Ok, first off, go and grab BOSS from http://code.google.com/p/better-oblivion-sorting-software/downloads/detail?name=BOSS%20v2.1.1%20Installer.exe&can=2&q=

Then install the Unofficial Patches - http://skyrim.nexusmods.com/mods/19, http://skyrim.nexusmods.com/mods/23491, http://skyrim.nexusmods.com/mods/25127, and http://skyrim.nexusmods.com/mods/31083.

The mod author says at the top of the comments section for "Extended Slider colors" that the mod is discontinued and has been replaced by "Racemenu", so uninstall Extended Slider colors and grab Racemenu instead from http://skyrim.nexusmods.com/mods/29624 .

I assume that as both mods do pretty much the same thing, you're affected by an issue mentioned by the author on the mod description for Racemenu which says "If you experience crashing while opening the menu please consider acquiring the optional download DisableFaceGenCache. This is an SKSE plugin that disables caching of FaceGen parts that can crash your game if you have many hair/eye/brow mods installed." So try that.

I found all this in 2 minutes by just doing some quick reading - so, as I suggested above - read, read, read!

If betterquestobjectives.esp is from the Even Better Quest Objectives mod (and it should be, as that is the newer and preferred version), then that requires the Unofficial Skyrim Patch, and will lead to crashes without it.

Okayy thanks everyone, the problem seems solved. I′ll make sure i pay more attention to what u said

and again thanks for helping