Macbook Pro is slow/laggy and makes a weird noise

Hello members,
I have a Mid-2010 Macbook Pro running Mountain Lion with all the latest updates. Everything was fine until 3 days back, when it started acting up. Moving the cursor was extremely laggy, and starting up any application takes forever. I also noticed a weird noise, more like a phone pulse dial, coming from the front. It repeats itself every 3 seconds, so I first thought it must be the HDD failing. But I have run all sorts of hardware tests but every test seems to infer that the HDD is working fine. Is it possible that the HDD is failing even though it doesn't show up on any test? The Apple store nearest to me is more than a 3 hour drive away, so it's almost impossible to go there in person. Can anyone please help? Thanks in advance.

I suggest you start with these user tip articles:
https://discussions.apple.com/docs/DOC-3353
https://discussions.apple.com/docs/DOC-3521
Ciao.

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  • Why is my Macbook pro so slow? And what can I do to fix this?

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    2. If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. Backup is always a must, and when you're having any kind of trouble with the computer, you may be at higher than usual risk of losing data, whether you follow these instructions or not.
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    PPATH=/usr/bin:/bin:/usr/sbin:/sbin;clear;c01='\nRAM details\n%s\n';c02='pmset -g';c03='boot-args';c04=(/ "");c05=(System User);c06='user %s%%, system %s%%';c07='/usr/libexec/PlistBuddy -c Print';c08='%s\n\t(%s)\n';c09='defaults read';c10=networksetup;c11='^[[:space:]]*((127\.0\.0\.1|::1|fe80::1%lo0)[[:space:]]+local|(255\.){3}255[[:space:]]*broadcast)host[[:space:]]*$';c12='com.autodesk.AutoCAD com.evenflow.dropbox com.google.GoogleDrive';c13=(Desktop L*/Keyc*);c14=(20 7);c15=(100 25);c16=(down up);c17=(recvfrom sendto);c18='\n%s\n\n%s\n';c19='\n%s: %s\n';c20='s/^ *//;5p;6p;8p;12p';c21='/ Id/s/.+: //p;/Mem/{s/[^0-9]//g;p;}';c22='1,5d;/[my].*:/d;p';c23='5,6p';c24='/Cy|Cond.*: [^N]/s/^.*://p';c25='/:$/{s/ *:$//;x;s/\n//;/Apple|Genesy|Intel|SMSC/d;s/\n.*//;/\)/p;};/^ *(V.+ [0N]|Man).+ /{s/ 0x.... //;s/[()]//g;s/(.+: )(.+)/ (\2)/;H;}';c26='/id: N|te: Y/p';F01(){ ((s00==0));};F02(){ o=;a=;((s01==0));};F03(){ system_profiler SP${1}DataType|sed -En "$2";};F04(){ o=`echo $o`;[[ ! 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  • Macbook Pro is slow & laggy - EtreCheck Done

    Hello Everyone,
    I have serious performance issue with my MBP (late 2011). I attempted most common steps on this community and it doesn't solve the problem. The boot-up takes about 2-3 minute alone, when you move the cursor across the dock there is a delay of a few seconds for them pop out. All actions performed are taking incredibly long. In past 2 years, i never had a problem like this.
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    User: 6.55%
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    Restarting Macbook Multiple times
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    Removing start-up files from User group
    Fan noise is audible and Battery Performance is affected.
    Below are screenshot and latest EtreCheck:
    Hardware Information:
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    Matt M.

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