HT1338 Macbook air not powering up when pressing power on button, then after a few minutes it will power on.

My Macbook Air that I purchased in November of 2011 has just started to not power on as soon as I hit the power on button.
The Macbook Air will power on after a minute or so and works fine as of now.
This has happenned on two different occasions today.
Anyone have a reason why this would happen? Any solutions?
Thanks for your assistance,
Tommy

Try a SMC and PRAM reset
Step by Step to fix your Mac

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Thanks neil

try resetting your phone by turning it off and back on again. The servers may still be having a hard time keeping up, so you may just need to wait a little while and try again.

Hi, I accidentally spilled water on my Mac Air on the very right side of the keyboard. After a few minutes, the screen turned white and a gray folder with a question mark came up and kept flashing. THEN IT DIED HELP.

After the screen turned white and the folder popped up, it just kept flashing. After a few minutes the screen just turned white completely and I could hear the noise of the drive. It just sat there still with the noise for a good few hours until the battery died and then my mac just shut down completely. I tried to see if the computer could charge, and it does charge. I just can not turn the computer on no matter what. It is dead. It might be the logic board or the drive...I'm hoping it won't cost me a new computer because I just got this 5 months ago....

Do not attempt to charge as that will only make the damage worse. You need to take the MacBook Air to an Apple store genius bar and have the technicians check and see what repair work is necessary. It only takes a very small amount of liquid to cause short circuits and damage.

MacBook Air not powering up

I Have a mid2012 13" mb air. About 3 months ago it would simply not turn on. I plugged it in, nothing. I tried various key combinations Including the shift/alt power button which cause a led on the MagSafe to Turn off and on - nothing. We were really busy in the lead up to a move. I tried the mba intermittently- nothing.
yesterday I reali there were some files I want on there. I thought I'd try again. Pressed power button, nothing. Plugged it in and it started up! I logged in. Retrieved my files. Backed up to time machine. Upgraded to 10.10 Which included several restarts. I went to turn it off and the power button wouldn't register. I shutdown via the menu. When I went to turn on, nothing. What's wrong with my MBA? Is the power button the only thing not working ? Is there any way around that?

You should also ask this in the MacBook Air forum. This is the forum for the white and black plastic MacBooks that were discontinued in 2010. You should also post this question there to increase your chances of getting an answer.
https://discussions.apple.com/community/notebooks/macbook_air

Macbook Air Immediately powers off when mini display to VGA cable plugged in.

I have a late 2010 MBA 11 inch. I am runnig OSX Snow Leopard, all software and firmware up to date as of 08/10/2011.
I am trying to use my mini display port to VGA cable to run an Optoma PK301 projector. Every time I plug in my mini display to VGA cable, the machine immediately powers off. No shutdown screen, no other warning signs, just instant black, as if the power was just immediately disconnected.
I have tried plugging in the cable while the projector is plugged in and with the projector unplugged. Either way the result is the same. I have been able to start the computer with the adapter plugged in and it will power on, however the projector will no pick up any signal from my MBA.
Anybody have any ideas on this? I have a genius bar appointment this afternoon. It is just frustrating because I am so used to everything "just working."
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TE

Hi and welcome to Discussions,
it's avaiable in the US Apple Online Store http://store.apple.com/us/product/MB572Z/A?fnode=MTY1NDA5OQ&mco=MjkyNjI0MA
Not sure how to get it to china though.
Stefan

My Macbook Air will start and then after a few minutes the HDD fills up with 29Gigs and I have to reboot!

when i run my macbook in safe mode it is perfect fuctionality and shows 29 gigs free space of the 120 total of the flash drive, however, when i start normal it works good for the first few minutes and then i get the startup disk is full error message and then it will momentarily lock up. I turned off the time machine which has been locking up since April 25th, and it will also act "glitchy" while it is working for the time until the storage is full pops up.
I have erased tons of stuff and have almost 30 gigs free, but then it just fills up - is this a virus?? HDD issue?? I have had no problems until recently with one time the computer locked up and it has gotten worse over time - i am open to suggestions - thank you

1. This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve the problem. But with the aid of the test results, the solution may take a few minutes, instead of hours or days.
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.
There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
3. Below are instructions to run a UNIX shell script, a type of program. All it does is to collect information about the state of the computer. That information goes nowhere unless you choose to share it. However, you should be cautious about running any kind of program (not just a shell script) at the request of a stranger. If you have doubts, search this site for other discussions in which this procedure has been followed without any report of ill effects. If you can't satisfy yourself that the instructions are safe, don't follow them. Ask for other options.
Here's a summary of what you need to do, if you choose to proceed:
☞ Copy a line of text in this window to the Clipboard.
☞ Paste into the window of another application.
☞ Wait for the test to run. It usually takes a few minutes.
☞ Paste the results, which will have been copied automatically, back into a reply on this page.
The sequence is: copy, paste, wait, paste again. You don't need to copy a second time. Details follow.
4. You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode, under the conditions in which the problem is reproduced. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
5. If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this section doesn’t apply. Don't log in as root.
6. The script is a single long line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, though you may not see all of it in the browser window, and you can then copy it. If you try to select the line by dragging across the part you can see, you won't get all of it.
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PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/libexec;clear;cd;p=(Software Hardware Memory Diagnostics Power FireWire Thunderbolt USB Fonts 51 4 1000 25 5120 KiB/s 1024 85 \\b%% 20480 1 MB/s 25000 ports 'com.autodesk.AutoCad com.evenflow.dropbox com.google.GoogleDrive' DYLD_INSERT_LIBRARIES\ DYLD_LIBRARY_PATH -86 ` route -n get default|awk '/e:/{print $2}' ` 25 N\\/A down up 102400 25600 recvfrom sendto CFBundleIdentifier 25 25 25 );N5=${#p[@]};p[N5]=` networksetup -listnetworkserviceorder|awk ' NR>1 { sub(/^$[0-9]+$ /,"");n=$0;getline;} $NF=="'${p[45]}')" { sub(/.$/,"",$NF);print n;exit;} ' `;f=('\n%s: %s\n' '\n%s\n\n%s\n' '\nRAM details\n%s\n' %s\ %s '%s\n\t(%s)\n' );S0() { echo ' { q=$NF+0;$NF="";u=$(NF-1);$(NF-1)="";gsub(/^ +| +$/,"");if(q>='${p[$1]}')printf("%s (UID %s) is using %s '${p[$2]}'",$0,u,q);} ';};s=(' /^ *$|CSConfigDot/d;s/^ */ /;s/[-0-9A-Fa-f]{22,}/UUID/g;s/(ochat)\.[^.]+(\..+)/\1\2/;/Shared/!s/\/Users\/[^/]+/~/g ' ' s/^ +//;5p;6p;8p;12p;' ' {sub(/^ +/,"")};NR==6;NR==13&&$2<'${p[10]} ' 1s/://;3,6d;/[my].+:/d;s/^ {4}//;H;${ g;s/\n$//;/s: [^EO]|x([^08]|02[^F]|8[^0])/p;} ' ' 5h;6{ H;g;/P/!p;} ' ' ($1~/^Cy/&&$3>'${p[11]}')||($1~/^Cond/&&$2!~/^N/) ' ' /:$/{ s/ *:$//;x;s/\n//;/Apple|Genesy|Intel|SMSC/d;s/\n.*//;/\)/p;};/^ *(V.+ [0N]|Man).+ /{ s/ 0x.... //;s/[()]//g;s/(.+: )(.+)/ (\2)/;H;} ' ' s/^.*C/C/;H;${ g;/No th|pms/!p;} ' '/= [^GO]/p' '{$1=""};1' ' /Of/!{ s/^.+is |\.//g;p;} ' ' $0&&!/:/;END { if(NR<100)print "com.apple.";} ' ' $3~/[0-9]:[0-9]{2}$/ { $4="";gsub(" "," ");gsub(/:[0-9:a-f]{14}/,"");} { print|"tail -n'${p[12]}'";} ' ' NR==2&&$4<='${p[13]}' { print $4;} ' ' END { $2/=256;if($2>='${p[15]}')print int($2) } ' ' NR!=13{next};{sub(/[+-]$/,"",$NF)};'"`S0 21 22`" 'NR==2'"`S0 37 17`" ' NR!=5||$8!~/[RW]/{next};{ $(NF-1)=$1;$NF=int($NF/10000000);for(i=1;i<=3;i++){$i="";$(NF-1-i)="";};};'"`S0 19 20`" 's:^:/:p' '/\.kext\/(Contents\/)?Info\.plist$/p' ' s/^.{52}//;s/ .+//p ' ' /Launch[AD].+\.plist$/;END{if(NR<100)print "/System/";} ' '/\.xpc\/(Contents\/)?Info\.plist$/p' ' NR>1&&!/0x|\.[0-9]+$|com\.apple\.launchctl\.(Aqua|Background|System)$/ { print $3;} ' '/\.(framew|lproj)/d;/plist:|:.+(M.+exec|scrip)/s/:[^:]+//p' '/root/p' ' !/\/Contents\/.+\/Contents|Applic|Autom|Frameworks/&&/Lib.+\/Info.plist$/;END{if(NR<100)print "/System/"};' '/^\/usr\/lib\/.+dylib$/p' '/\/etc\/(auto_m|hosts[^.]|peri)/s/^\.\/[^/]+//p' ' /\/(Contents\/.+\/Contents|Frameworks)\//d;p;' 's/\/(Contents\/)?Info.plist$//;p' ' { gsub("^| ","||kMDItem'${p[35]}'=");sub("^.."," ") };1 ' p '{print $3"\t"$1}' 's/\'$'\t''.+//p' 's/1/On/p' '/Prox.+: [^0]/p' '$2>'${p[9]}'{$2=$2-1;print}' ' BEGIN { i="'${p[26]}'";M1='${p[16]}';M2='${p[18]}';M3='${p[31]}';M4='${p[32]}';} !/^A/ { next;} /%/ { getline;if($5<M1) a="user "$2"%, system "$4"%";} /disk0/&&$4>M2 { b=$3" ops/s, "$4" blocks/s";} $2==i { if(c) { d=$3+$4+$5+$6;next;};if($4>M3||$6>M4) c=int($4/1024)" in, "int($6/1024)" out";} END { if(a) print "CPU: "a;if(b) print "I/O: "b;if(c) print "Net: "c" (KiB/s)";if(d) print "Net errors: "d" packets/s";} ' ' /r\[0\] /&&$NF!~/^1(0|72\.(1[6-9]|2[0-9]|3[0-1])|92\.168)\./ { print $NF;exit;} ' ' !/^T/ { printf "(static)";exit;} ' '/apsd|OpenD/!s/:.+//p' ' (/k:/&&$3!~/(255\.){3}0/ )||(/v6:/&&$2!~/A/ ) ' ' /lR/ { if($2<='${p[25]}')print $2;} ' ' BEGIN { FS=":";} $3~/(sh|ng|ic)$/ { n=split($3,a,".");sub(/_2.+/,"",a[n-1]);b=b"\n"$2" "a[n-1]" "a[n]" "$1;c=c$1;} END { d="sort|tail -n'${p[38]}'";print b|d;close(d);if(c)print("\n\t* Code injection");} ' ' NR!=4{next} {$NF/=10240} '"`S0 27 14`" ' END { if($3~/[0-9]/)print$3;} ' ' BEGIN { L='${p[36]}';} !/^[[:space:]]*(#.*)?$/ { l++;if(l<=L) f=f"\n "$0;} END { F=FILENAME;if(!F) exit;if(!f) f="\n [N/A]";"file -b "F|getline T;if(T!~/^(A.+ E.+ text$|POSIX sh.+ text ex)/) F=F" ("T")";printf("\nContents of %s\n%s\n",F,f);if(l>L) printf("\n ...and %s more line(s)\n",l-L);} ' ' BEGIN{FS="= "} /Path/{print $2} ' ' /^ +B/{ s/.+= |(-[0-9]+)?\.s.+//g;p;} ' ' END{print NR} ' ' /id: N|te: Y/{i++} END{print i} ' ' /:/{$0="'"${p[28]}"'"};1;' '/ en/!s/\.//p' );c1=(system_profiler pmset\ -g nvram fdesetup find syslog df vm_stat sar ps sudo\ crontab sudo\ iotop top pkgutil PlistBuddy whoami cksum kextstat launchctl sudo\ launchctl crontab 'sudo defaults read' stat lsbom mdfind ' for i in ${p[24]};do ${c1[18]} ${c2[27]} $i;done;' defaults\ read scutil sudo\ dtrace sudo\ profiles sed\ -En awk /S*/*/P*/*/*/C*/*/airport networksetup mdutil );c2=(com.apple.loginwindow\ LoginHook '-c Print /L*/P*/loginw*' '-c Print L*/P*/*loginit*' '-c Print L*/Saf*/*/E*.plist' '~ $TMPDIR.. $ -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 $' '.??* -path .Trash -prune -o -type d -name *.app -print -prune' '-c Print\ :'${p[35]}' 2>&1' '-c Print\ :Label 2>&1' '{/,}L*/{Con,Pref}* -type f ! -size 0 -name *.plist -exec plutil -s {} \;' "-f'%N: %l' Desktop L*/Keyc*" therm sysload boot-args status '-F bsd -k Sender kernel -k Message Req "Beac|caug|dead[^bl]|GPU |hfs: Ru|inval|jnl:|last value [1-9]|n Cause: -|NVDA$|pagin|proc: t|Roamed|rror|ssert|Thrott|timed? ?o|WARN" -k Message Rne "Goog|ksadm|SMC:" -o -k Sender fseventsd -k Message Req "SL"' '-du -n DEV -n EDEV 1 10' 'acrx -o comm,ruid,%cpu' '-t1 10 1' '-f -pfc /var/db/*/*.{BS,Bas,Es,OSXU,Rem}*.bom' '{/,}L*/Lo*/Diag* -type f \( -exec grep -lq "^Thread c" {} \; -exec printf \* \; -o -true $ -execdir stat -f:%Sc:%N -t%F {} \;' '-L {/{S*/,},}L*/Lau* -type f' '-L /{S*/,}L*/StartupItems -type f -exec file {} +' '-L /S*/L*/{C*/Sec*A,E}* {/,}L*/{A*d,Compon,Ex,In,iTu,Keyb,Mail/B,P*P,Qu*T,Scripti,Sec,Servi,Spo}* -type f -name Info.plist' '/usr/lib -type f -name *.dylib' `awk "${s[31]}"<<<${p[23]}` "/e*/{auto_master,{cron,fs}tab,hosts,{launchd,sysctl}.conf} /usr/local/etc/periodic/*/* .launchd.conf" list getenv /Library/Preferences/com.apple.alf\ globalstate --proxy '-n get default' -I --dns -getdnsservers -getinfo\ "${p[N5]}" -P -m\ / '' -n1 '-R -l1 -n1 -o prt -stats command,uid,prt' '--regexp --only-files --files com.apple.pkg.*|sort|uniq' -kl -l -s\ / );N1=${#c2[@]};for j in {0..8};do c2[N1+j]=SP${p[j]}DataType;done;N2=${#c2[@]};for j in 0 1;do c2[N2+j]="-n 'syscall::'${p[33+j]}':return {@out[execname,uid]=sum(arg0)} tick-10sec {trunc(@out,1);exit(0)}'";done;l=(Restricted\ files Hidden\ apps 'Elapsed time (s)' POST Battery Safari\ extensions Bad\ plists 'High file counts' User Heat System\ load boot\ args FileVault Diagnostic\ reports Log 'Free space (MiB)' 'Swap (MiB)' Activity 'CPU per process' Login\ hook 'I/O per process' Mach\ ports kexts Daemons Agents launchd Startup\ items Admin\ access Root\ access Bundles dylibs Apps Font\ issues Inserted\ dylibs Firewall Proxies DNS TCP/IP RSSI Profiles Root\ crontab User\ crontab 'Global login items' 'User login items' Spotlight );N3=${#l[@]};for i in 0 1 2;do l[N3+i]=${p[5+i]};done;N4=${#l[@]};for j in 0 1;do l[N4+j]="Current ${p[29+j]}stream data";done;A0() { id -G|grep -qw 80;v[1]=$?;((v[1]==0))&&sudo true;v[2]=$?;v[3]=`date +%s`;clear;};for i in 0 1;do eval ' A'$((1+i))'() { v=` eval "${c1[$1]} ${c2[$2]}"|'${c1[30+i]}' "${s[$3]}" `;[[ "$v" ]];};A'$((3+i))'() { v=` while read i;do [[ "$i" ]] && eval "${c1[$1]} ${c2[$2]}" \"$i\"|'${c1[30+i]}' "${s[$3]}";done<<<"${v[$4]}" `;[[ "$v" ]];};A'$((5+i))'() { v=` while read i;do '${c1[30+i]}' "${s[$1]}" "$i";done<<<"${v[$2]}" `;[[ "$v" ]];};';done;A7(){ v=$((`date +%s`-v[3]));};B2(){ v[$1]="$v";};for i in 0 1;do eval ' B'$i'() { v=;((v['$((i+1))']==0))||{ v=No;false;};};B'$((3+i))'() { v[$2]=`'${c1[30+i]}' "${s[$3]}"<<<"${v[$1]}"`;} ';done;B5(){ v[$1]="${v[$1]}"$'\n'"${v[$2]}";};B6() { v=` paste -d: <(printf "${v[$1]}") <(printf "${v[$2]}")|awk -F: ' {printf("'"${f[$3]}"'",$1,$2)} ' `;};B7(){ v=`grep -Fv "${v[$1]}"<<<"$v"`;};C0(){ test "$v"&&echo "$_";};C1() { [[ "$v" ]]&&printf "${f[$1]}" "${l[$2]}" "$v";};C2() { v=`echo $v`;[[ "$v" != 0 ]]&&C1 0 $1;};C3() { v=`sed -E "$s"<<<"$v"`&&C1 1 $1;};for i in 1 2;do for j in 2 3;do eval D$i$j'(){ A'$i' $1 $2 $3; C'$j' $4;};';done;done;A0;{ A2 0 $((N1+1)) 2;C0;A1 0 $N1 1;C0;B0;C2 27;B0&&! B1&&C2 28;D12 15 37 25 8;A1 0 $((N1+2)) 3;C0;D13 0 $((N1+3)) 4 3;D22 0 $((N1+4)) 5 4;for i in 0 1 2;do D13 0 $((N1+5+i)) 6 $((N3+i));done;D13 1 10 7 9;D13 1 11 8 10;D22 2 12 9 11;D12 3 13 10 12;D23 4 19 44 13;D23 5 14 12 14;D22 6 36 13 15;D22 7 37 14 16;D23 8 15 38 17;D22 9 16 16 18;B1&&{ D22 11 17 17 20;for i in 0 1;do D22 28 $((N2+i)) 45 $((N4+i));done;};D22 12 39 15 21;A1 13 40 18;B2 4;B3 4 0 19;A3 14 6 32 0;B4 0 5 11;A1 17 41 20;B7 5;C3 22;B4 4 6 21;A3 14 7 32 6;B4 0 7 11;B3 4 0 22;A3 14 6 32 0;B4 0 8 11;B5 7 8;B1&&{ A2 19 26 23;B7 7;C3 23;};A2 18 26 23;B7 7;C3 24;A2 4 20 21;B7 6;B2 9;A4 14 7 52 9;B2 10;B6 9 10 4;C3 25;D13 4 21 24 26;B4 4 12 26;B3 4 13 27;A1 4 22 29;B7 12;B2 14;A4 14 6 52 14;B2 15;B6 14 15 4;B3 0 0 30;C3 29;A1 4 23 27;B7 13;C3 30;D23 24 24 32 31;D13 25 37 32 33;A1 23 18 28;B2 16;A2 16 25 33;B7 16;B3 0 0 34;B2 21;A6 47 21&&C0;B1&&{ D13 21 0 32 19;D13 10 42 32 40;D22 29 35 46 39;};D23 14 1 48 42;D12 34 43 53 44;D22 0 $((N1+8)) 51 32;D13 4 8 41 6;D12 26 28 35 34;D13 27 29 36 35;A2 27 32 39&&{ B2 19;A2 33 33 40;B2 20;B6 19 20 3;};C2 36;D23 33 34 42 37;D22 32 31 43 38;D23 20 42 32 41;D23 14 2 48 43;D13 4 5 32 1;D22 4 4 50 0;D13 14 3 49 5;D23 22 9 37 7;A7;C2 2;} 2>/dev/null|pbcopy;exit 2>&-
Copy the selected text to the Clipboard by pressing the key combination command-C.
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☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
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Click anywhere in the Terminal window and paste by pressing command-V. The text you pasted should vanish immediately. If it doesn't, press the return key.
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If you're not logged in as an administrator, you won't be prompted for a password. The test will still run. It just won't do anything that requires administrator privileges.
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Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
Copyright © 2014 by Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Use Agreement for the Apple Support Communities website ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

The sound goes out when using facetime on my macbookpro after a few minutes. How do I fix this?

I recently downloaded facetime to my macbookpro 13" with OS X Version 10.6.8. The app works fine for a few minutes, then the sound disappears. I have to close and relaunch the app before it starts working for another few minutes then all over again. Is there a fix for this???

You can try to disable hardware acceleration in Firefox.
*Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"
You need to close and restart Firefox after toggling this setting.
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
*https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration
Try to "disable the hardware acceleration" in the Flash Player.
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See also:
*https://support.mozilla.org/kb/keep-flash-up-to-date-and-troubleshoot-problems
Flash "Display settings" window:
*http://www.macromedia.com/support/documentation/en/flashplayer/help/help01.html

My apple macbook pro is about 16mths old, its trackpad seems to have gotten a life of its own. it will be fine then after a few minutes the arrow on the page will start moving and clicking all on its own, im not sure what to do?

My apple trackpad seems to have a mind of its own, it will be fine then it will go wild and start moving all on its own, clicking and going from left to right in spastic motions, what do i do, is it a virus or dust or what?

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My MacBook air keeps freezing up when I'm on Safari or not, any help would be great

My MacBook air keeps freezing up when I'm on Safari or not, any help would be greatly appreciated

Hi Blane756,
Thanks for using Apple Support Communities. This article has steps for a different issue, a gray screen at startup, that I think would still be worth trying for your freezing issues:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
Cheers,
- Ari

Why my iPad 4 become very lag after upgrade to iOS 8.0.2 and not sensitive anymore when press the keyboard and programs it didn't respond when I type the word using the keyboard fast it lag until I cannot locked or switch off the phone

Why my iPad 4 become very lag after upgrade to iOS 8.0.2 and not sensitive anymore when press the keyboard and programs it didn't respond when I type the word using the keyboard fast it lag until I cannot locked or switch off the phone

Same issue here both with my iphone 5S as well as my iPad2. THe sync to my macbook air does not complete and it shows a large overcapacity level when connected, but once I disconnect there is plenty of room (4 GB) available, not a 20 GB overage.

My macbook air is running slow when playing movies

anyone! my macbook air is running low when playing movies and I also noticed when opening certain websites, any suggestions on how clean the computer or fix the issue!
Thank you much

Hi ana1773gar,
I understand your MacBook Air is not performing as expected. The following article provides troubleshooting steps which can help with performance issues:
OS X Yosemite: If your Mac runs slowly
If you find your Mac is running slowly, there are a number of potential causes that you can check.
An app you’re using may require more memory than your computer has easily available. To see how much memory your computer has, choose Apple menu > About This Mac, then click Memory. See the help that came with the app to see its system requirements.
To find out how to increase your computer’s memory, choose Apple menu > About This Mac, click Memory, then click Memory Upgrade Instructions in the lower-left corner. documentation that came with the app to its system requirements.
To see what processor your computer has, choose Apple menu > About This Mac, then click Overview.
To see what graphics card your computer has, choose Apple menu > About This Mac, then click Displays. The name of the graphics card in your computer is displayed in the middle of the window.
Your computer’s startup disk may not have enough free disk space. To make disk space available, move files to another disk, then delete files you no longer need on the startup disk.
Quit any apps you’re not using.
If you have problems with your disk, use Disk Utility to verify and try and fix any issues.
Use Activity Monitor to see if a particular app or activity is making a large demand on your Mac.
Thank you for contributing to Apple Support Communities.
Take care,
Bobby_D

MacBook Air not turn on, after hard disk eject, without guarantee

Hello i have two macbook air not turning on,
after ejecting external hard disk, when macbook air is sleeping.
External hardisk ( 2.5 sata) have one ending of USB Type mini-B
and two endings of cable (one for data, other for power), of USB Type A
After next sequence,
-insert one tail of usb cable into macbook air, the second usb cable into 5v adapter (like iPhone usb adapter)
-after some time macbook air going to sleep
-without waking macbook air, pull out the cable what connected into macbook air
MacBook Air will not turning on.
even after this instructions
http://support.apple.com/kb/ts1367
In nearest AppleStore they say that there is a problem with logic part of notebook,
And the minimal price of repair will be cost half price of macbook air.
In other words, they say what they will not searching the problem of this,
they only will replace mother board.
Would you suggest other solutions ?
May be somebody else have this problem ?

OK. I wasn't quite sure. So, the first thing to try is Resetting your Mac's PRAM and NVRAM followed by Intel-based Macs: Resetting the System Management Controller (SMC). If neither can be effected then take it in for service as there has been a serious hardware failure.

Macbook Air Not Rebooting

I have a problem with my macbook air and I thought I would post it. It doesn't happen with my macbook pro or iMac or any other older macs in my home. When I go to shut down my macbook air, it closes all application including the finder and then just sits there. There's a circular object going round and round in the middle of the screen, but that's it. I have to physically turn off the Macbook air by pressing and holding the power button. This has happened at least 3 time to me since I got this computer and I wanted to know if anyone else is experiencing the same thing.

I've experienced this issue as well. After completing a sync with dot Mac, I disabled iDisk, autosync with dot Mac, and then deleted the MBA from my list of sync'd computers with dot Mac. That seemed to help for a while, but the problem resurfaced shortly there after. As an experiment, I completed the steps noted above, with the exception of deleting all synced computers from the dot Mac list. This has solved the problem on my end.

When playing WOW my MacBook air's fan comes on and stays on until shortly after I stop playing. is

When playing WOW my MacBook air's fan comes on and stays on until shortly after I stop playing. is this normal? Never comes on at any other time. Thanks.

Thank you, but I followed all instructions to reset the SMC and it has not helped. Looks like I'll have to take it in to Apple for repair.

Serial number? I have a MacBook Air (mid 2011). When I go into about this Mac, all it says for serial number is systemserial

Serial number? I have a MacBook Air (mid 2011). When I go into about this Mac or any of the other ways to look up the serial #,all it says for serial number is systemserial#. Is there a way to fix this?

About This Mac will show something like this:
Click on More Info... leads to some thing like this:
Serial Number is the second line from the bottom.

HT1338 Macbook air not powering up when pressing power on button, then after a few minutes it will power on.

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